尽管地球上水资源丰富，但是超过97%的水为咸水，而在剩下的不到3%的水又有一半以上要么是冻结在两极，要么是构成了冰川。
THERE is a lot of water on Earth, but more than 97% of it is salty and over half of the remainder is frozen at the poles or in glaciers.
Gibler和其他同行预测，在未来五年内，在全国出售的一半灯具将是二极管灯。
Within the next five years, Gibler and others in the industry estimate that half of all lights sold in this country will be LEDs.
员工们的意见两极分化很严童：一半人非常喜欢，一半人一点也不喜欢。
The staff was polarized: half of them really liked it, and the other half didn't.
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