Today we tell about the development of what scientists are calling a synthetic cell - a cell produced by people instead of by nature.
VOA: special.2010.07.20
This shows the greatly magnified compared to the size of a cell because viruses are much, much smaller than cells.
这是一幅放大了许多倍的,细胞图片,因为病毒比细胞小得多的多
So the idea is, if you can take a cell... you can take a stem cell from your body
所以如果你能够取得一个细胞……如果你能够从你体内取得一个干细胞,
To many people,the ability of a cell to reproduce itself is the definition of life itself.
VOA: special.2010.07.20
It's a mechanism that they have evolved in order to prevent foreign genes from entering a cell and being expressed.
它们进化出这种机制来,防止异源基因进入细胞并表达
Telomeres are necessary for a cell to divide.
VOA: special.2009.10.07
Electrolysis of magnesium chloride in a cell where the one electrode we would make magnesium.
在电池内电解氯化镁,我们能在其中一个电极上得到镁。
"We have one project called bee-spotters, which is now restricted to Illinois, where we ask people to go out with a digital camera,even a cell phone, and photograph either bumblebees or honeybees."
VOA: special.2011.05.24
Essentially, what they are is it's a protein that spans the membrane of a cell.
本质上来说,它是一个横跨细胞膜的蛋白质。
The CellScope is a cell phone microscope.
VOA: special.2009.08.03
The answer is, "It's not like anything," where that doesn't mean there's something that it's like to be a cell phone, but different from being anything else.
答案就是,什么感觉都不像“,那不是说,作为手机真的有一种感觉,只是和作为其他东西的感觉。
"We are here today to announce the first synthetic cell -- a cell made by starting with the digital code in the computer, building the chromosome from four bottles of chemicals, assembling that chromosome in yeast, transplanting it into a recipient bacterial cell and transforming that cell into a new bacterial species."
VOA: special.2010.07.20
I barely know how to use a cell phone let alone a computer, you know,
我勉强会用手机,更不要说电脑了,你知道,
Jennings says talking on the phone and reaching for a cell phone "is akin to having four beers and driving."
VOA: standard.2010.06.24
They might be 100 nanometers or so in diameter, whereas, a cell is ten microns or so in diameter.
直径只有一百纳米左右,而一个细胞的直径是十微米左右
"Reaching for a cell phone when it's going off, you're nine times more likely to get into an accident than normally driving."
VOA: standard.2010.06.24
So, this is a cell that's infected with a microorganism, it's infected with a virus, let's say it's infected with influenza virus.
这是一个感染了微生物的细胞,它感染了一种病毒,就说是感染了流感病毒吧
Kevin Schumann,19, was one of the drivers. First,he drove without a cell phone, and was able to easily navigate around the cones and dolls.
VOA: standard.2010.06.24
For example, a gene that makes a cell cancerous, I'd like to stop it from being expressed.
举例来说,如果某段基因导致细胞癌变,我就希望阻止它表达
But then he was given a cell phone and asked to start texting.
VOA: standard.2010.06.24
But, from this moment forth, cell phone goes off, you're out. You leave the room, OK? And, Lord help you if a cell phone goes off during an exam because those things have text messaging capabilities.
但是,从这一刻开始,手机响的话,你们就出去,你们就离开教室,好吗,上帝保佑你的手机不要在考试期间响起,因为它们有发短信的功能。
They don't want him to go out. He's been in jail for more than 20 years now and the maximum rule is to keep him inside a cell.
VOA: standard.2010.07.07
Formaldehyde cross-links proteins, so, if you treated this virus with Formaldehyde, even it was able to enter a cell, it couldn't break down anymore.
甲醛使蛋白质发生交联反应,因此,如果你对病毒使用了甲醛,即使它可以侵入细胞,它也不能够再进行分解
Can a cell phone or computer bring down a regime?
VOA: standard.2010.03.09
Well, it turns out that we could not identify, at least at that point, a cell culture that would serve as a host for vaccinia.
然而我们还不能断定,至少这个时候无法断定,这些被感染的细胞就是牛痘病毒的宿主
Apple fans and enthusiasts were eager to finally purchase an iPad,a tablet computer with a touch-screen that Apple claims will "bridge the gap" between a cell phone and a laptop computer.
VOA: standard.2010.04.03
There are multiple mechanisms that a cell can use to decide which genes it is expressing at any one time and which ones are not expressed.
在某一时刻,决定细胞中哪些基因表达,哪些基因不表达的机理十分复杂
"The three laureates have accomplished what many scientists thought impossible, namely to determine the three- dimensional structure of the molecular machine that makes all the proteins in a cell, the so-called ribosome,"
VOA: standard.2009.10.07
In general, inside of a cell molecules move by a process called diffusion.
总的来说,细胞内的分子通过扩散作用来移动
What if this is a gene that's causing a cell to be cancerous?
但假如是个能导致细胞癌变的基因呢
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