南加利福尼亚州的用水大部分来自萨克拉门托-圣华金三角洲，一个多世纪以前，这里建起堤坝，将土地分割成农田。

23southern California draws much of its water from the Sacramento-San Joaquin Delta, which was diked and divided into farms more than a century ago.

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很显然，20世纪的亚洲是世界上人口增长最迅速的一个洲，增长率保持在13%。 。

Obviously, , Asia is a continent where the population growth rate was the highest in the world in the 20th century, which maintained at 13%.

youdao

很显然，20世纪的亚洲是世界上人口增长最迅速的一个洲，增长率保持在13%。

Obviously, Asia is a continent where the population growth rate was the highest in the world in the 20th century, which maintained at 13%.

youdao