Declarations,commitments and speeches don't feed hungry people, He says the scale of the challenge is significant. There are more than one billion poor and hungry people in the world today.
VOA: standard.2010.03.29
and the important point is that when people anticipate loss, we didn't see the same scale of activation in this region.
重要的是,当人们预计会亏钱时,我们在这一区域并没有看到之前的那种活动。
Remember that these cells are relatively large compared to bacteria and so diffusion doesn't occur very quickly over this length scale.
要知道这些细胞相对细菌而言,还是比较大的,扩散作用在这种尺度上,发生得不是那么快
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