But it is not easy to earn enough money to gain this kind of power.

VOA: special.2010.05.16

Yes. In fact, there is not enough energy in a single photon to go ahead and eject an electron from this zinc surface.

是的，事实上，这里的光子没有足够的能量,去从锌表面逐出一个电子。

麻省理工公开课 - 化学原理课程节选

So in this case, we don't have enough energy to eject an electron, so, an electron is not ejected.

所以在这种情况下，我们没有足够的能量,去逐出一个电子，这样没有电子被逐出。

麻省理工公开课 - 化学原理课程节选

The sad thing is that the majority of people that are killed by malaria are children because there immune system is not strong enough to ward off this infection."

VOA: special.2009.12.22

So this is only important, good to know,important to know, but not enough.

这是很重要的，知道很好，知道很重要，但不够。

哈佛公开课 - 幸福课课程节选

" said to be patient, but my mindset towards this situation is that 'sorry' is not enough anymore."

VOA: standard.2010.06.19

p1 I said let's do this slowly enough that this p1 is in equilibrium with this p1, but not so slowly that this pressure is equivalent to that pressure.

我曾说过我们足够慢地使这边的1,与这边的p1平衡，但是没有慢到,这里的压强等于这里的压强。

麻省理工公开课 - 热力学与动力学课程节选

"But for those who were laid off last month and the millions of Americans who have lost their jobs in this recession, a good trend is not good enough.

VOA: standard.2009.12.06

Now this does not mean that a person who doesn't have enough food, someone who is homeless on the streets here, gets an extra thousand or two thousand dollars a month-- that of course will make him or her much happier.

并不是说一个没有足够食物，一个无家可归，流落街头的人，每个月多有一两千美元-,那当然会让他或她更快乐。

哈佛公开课 - 幸福课课程节选

"For the working class women they ask for gains is not enough, yes,salary or what they should get, so this is what is right for them to do today,"

VOA: standard.2009.03.09