At that time, they had to carry water from the river at the foot of the hill to halfway up the hill.
那时，他们必须从山脚下的河里挑水到半山腰。
"A typical river carries five-to-ten times the amount of water vapor than the Mississippi river carries as liquid, on average," and a big one can carry fifty times, he added.
那就像是一条河流承载着相当于密西西比河平时所承载的五到十倍的水量，而一个更大的超级风暴能够承载50倍的水量，她补充道。
Canals carry the river water to the fields when necessary.
必要时，水渠可以把河水输到田里。
Canals carry the river water to the fields when necessary.
必要时，水渠可以把河水输到田里。
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