And as any girl scout knows, twigs catch light more readily than branches, so a twiggy sort of plant can catch fire more readily than its non-twiggy sister.

每个女童子军队员都知道，细枝比粗枝更容易聚光，所以细枝多的植物比枝条不那么细的同类姐妹更容易着火。

Plants catch light and turn it into an electric current, then use that energy to excite catalysts that split water into hydrogen and oxygen during what is called photosynthesis' light cycle.

植物捕获光线，转换成电流，然后利用这一这能量激活催化剂，然后把水分解成氢和氧，这一过程被称为光合作用的亮循环。

At first I didn't catch on, then I suddenly saw the light.

始而不解，继而恍然。

You could catch a ball, hum a tune, stop at a red light - act exactly like a person but without any sense of what it is like to be alive.

你可以接住一个球，哼个小曲并可以在红灯前停下来—看起来就像所有有感觉的人一样，而事实上你的身体又没有任何感觉。

It will gradually catch up with this slow pulse, reducing the speed of light in the slow pulse's vicinity.

它会逐渐赶上这个更慢的脉冲，降低整个慢脉冲附近光的速度。