But again, that we will supply for you on the exam just in case you forget it at that moment.
但在考试中我们会给出这个值,以防你当时忘记了。
So, this is what goes on in an electrolysis cell, and it works thanks to input energy from a power supply shown here.
所以,这是在一个电化学电池中发生的,它是靠输入的能量工作的,从和这个类似的电源输出的能量。
Back to this graphic again: unpredictable food supply occurred on the left but doesn't occur on the right.
再回到这张图,对左边的人而言,食物供给难以预计,而右边却并非如此
But they spent a lot of time, energy, and money on being sure that they would have a supply of water to hold them for a long siege.
他们花费了大量的时间,精力,和金钱来确保,在长期的围城中他们可以获得足够的水源
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