The calculation of rainfall recharge amount is a very major content in mathematical (physical) analog calculation for ground or surface water.

在地下水和地表水的数学(物理)模拟计算中，降雨补给量的计算是非常重要的内容。

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The 400-year-old shells show that the James River was saltier back then, which shows that there was little rainfall to recharge the supply of fresh water.

那些有400年岁月痕迹的硬壳表明，当年詹姆斯河的河水盐度更高，也就是说可以补充淡水资源的降雨极其稀少。

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Jay Famiglietti: there is not as much rainfall, so there is not as much groundwater recharge.

杰伊·费明力提：由于降雨量减少，地下水得不到相应的补充。

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"The recharge in the aquifers brought about by the abnormally heavy spring rainfall is most welcome, " he said.

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