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European Union health ministers pledged to pursue an effective and safe vaccine without delay.
VOA: standard.2009.04.30
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There are children who by a relatively modest donation to an effective aid agency, you could save their lives.
要拯救这些儿童的生命,只需要你向比较有效的救助机构,捐赠适量的钱款。
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where the super model could not be an effective model for bikinis after a certain age.
比基尼模特在达到一定的年龄后就无法再担任这份工作了。
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"We know this is a shared responsibility and in the days ahead we will work with the international community and our Chinese colleagues to fashion an effective and appropriate response."
VOA: standard.2010.05.25
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z So, this is what we find the actual z effective is for an electron in the helium atom.
所以这就是我们得到了实际有效的,对于一个氦原子的电子。
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Many months would pass before the Union could build up an effective naval force.
VOA: special.2009.09.10
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But essentially the only reason there was any way that that was an effective approach was because people basically realize "Oh this is a good idea and we agree with that as a culture."
但是，归根结底，这种方式之所以,能够取得成功，是因为,人们意识到,“哦，这挺好的，我们的文化可以接受它“,“哦，这挺好的，我们的文化可以接受它“
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He believed the music was an easy and effective way to spread his message.
VOA: special.2009.10.14
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This cell can only be an effective barrier if there's no way to get past it.
这些细胞只有密不透风,才足以形成一道屏障
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The country has not had an effective government for almost twenty years.
VOA: special.2009.04.25
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C indeed represents an effective displacement.
其实表示的是实际位移
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Grant was not an effective political leader.
VOA: special.2010.03.04
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What is an effective way to build muscles?
锻炼肌肉有什么有效的方法？
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Over at competitor General Electric, actor Ronald Reagan -- later the fortieth president of the United States -- and often referred to as the Great Communicator, was for many years an effective commercial spokesman every week on the GE Theater.
VOA: special.2011.07.21
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If we have a higher z effective, it's pulled in tighter, we have to put in more energy in order to eject an electron, so it turns out that that's why case 2 is actually the lowest energy that we need to put in.
而如果有效核电量更高，原子核的束缚也就更紧，我们不得不输入更多的能量来打出一个电子，这就是第二种情况,所需要输入的,能量更少的原因。
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Meanwhile,expedited efforts are going forward on several continents to develop an effective vaccine for the new strain of influenza.
VOA: standard.2009.04.30
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The z effective is lower, so we have to put less energy in to get an ion out.
它的有效核电量更低，所以我们只需要更少的能量就能打出一个离子。
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Economists have long considered government spending, especially on infrastructure, to be an effective tool for revitalizing a stagnating economy.
VOA: standard.2009.10.16
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So if we have total +2 and complete shielding -1 where that can actually negate a full positive charge, because remember our nucleus is plus 2, +1 one of the electrons is minus 1, so if it totally blocks it, all we would have left from the nucleus is an effective charge of plus 1.
抵消一个完全的正电荷,因为记住我们的原子核是,其中一个电子是,所以如果它完全挡住了它，我们从原子核中留下的，全部有效电荷就是，所以，在我们的第一个例子中,我们的第一种极端情况。
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Kaczynski has run an effective advertising campaign, and may well have gained ground over the last two weeks.
VOA: standard.2010.07.03
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And so that's an effective vaccines.
它是一种有效的疫苗
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"We need to ensure improved security conditions in the south in order to carry out an effective counter-narcotics strategy in Helmand and Kandahar provinces,".
VOA: standard.2009.03.27
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But it's only an effective vaccine in the context where you have people who can go to the doctor's office, or to an urgent care, some kind of medical facility, three times, reliably, at a specified period of time.
但为了保证接种效果,人们必须亲自去诊疗室,或者在急诊室里,使用一些医学设施辅助接种,还需要接种三次,它只在一段时间内有效
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"Having an effective state and a modern economy, which requires toiling more than a year."
VOA: standard.2010.06.24
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In an extreme case b, we had a z effective of 2, so essentially what we had was no shielding at all.
我们有效的z是，所以本质上我们完全没有屏蔽。
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"That defendant challenges in an appellate court and says I didn't have effective counsel.
VOA: standard.2009.05.22
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And the point that I also want to make is the way that they differ, z effective actually differs from the total charge in the nucleus due to an idea called shielding.
我也想指出的一点是它们不同的方式,有效的z事实上不同于原子核的，总电荷量,因为屏蔽效应。
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It is the first step toward an effective agreement on climate change,"
VOA: standard.2009.11.27
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Acupuncture maybe an effective treatment against depression in pregnant women.
VOA: standard.2010.03.03
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The visa for James Elder, an Australian,has been canceled effective Monday, but officials say after an appeal from the United Nations he will be allowed to stay there under September 21.
VOA: standard.2009.09.06
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