Energy can flow across the glass but I put a lid on top, and so the water can't get out.
能量可以穿过杯壁流动,但是我在顶上加了盖子,所以水不能跑出来。
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
Well a calorie technically--and this is again, not something that we would ever quiz you on but I just thought you might be interested to know-- that it's the energy required to raise one gram of water one degree centigrade, and we'll talk in a minute about you might go about measuring that.
理论上一卡路里,我重复下,这不是考试内容,但我想你们会感兴趣,一卡路里,是将一克水提升1℃所需要的热量,过会儿我们会讲如何测量
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