过去，70%的八年级和十年级学生每月看一次电影，甚至更多，但现在只有约一半的人这样做。

While 70 percent of 8th and 10th grade students used to go to the movies once a month or more, now only about half do this.

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尽管在过去十年左右的时间里，募集和使用了数以百万美金，野生老虎的数量仍下降一半。

Despite millions raised and spent in the last decade or so, wild tigers may have declined by half over that time.

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向矿企征收的实际税费却下跌了不止一半，从过去十年初期的大约34%下降到2008至09年的不到14%。

The actual charge to mining companies has fallen by more than half, from about 34% of profits earlier this decade to less than 14% in 2008-09.

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