The number of fish species in Poyang Lake has already fallen by half.

鄱阳湖鱼的种类已经减少了一半。

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The October leaves have fallen on the lake.

十月，树叶已飘落在湖面上。

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For example, at "Turtle Islet Spring Waves" on a fine, sunny day, Taihu Lake becomes serene and tranquil like a jeweled mirror fallen from heaven;

就拿“鼋渚春涛”一景举例，在风和日丽的时候，太湖平静无波，如天上落下的一面宝镜；

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The Salt Lake City, Utah lender's shares have fallen 47% the past year.

FORBES

She discusses Florida's Lake Okeechobee, a reservoir where water levels have fallen so low that fires recently broke out on the lakebed.

NPR: Struggling over Water: A Series Overview

The search was hampered, Dr. Grokhovsky said, by officials of Russia's Emergency Situations Ministry, which sealed off the area around an 25-foot-wide hole in the ice of Lake Chebarkul, near Chelyabinsk, where a chunk was believed to have fallen.

WSJ: Russia Meteor Was Largest in More Than a Century