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compare to把…比作, 喻为
例句：Shakespeare compared the world to a stage.
莎士比亚把世界比作舞台。
Life is compared to a voyage.
人生好比航海。
与…相比
例句：The writer was compared to Shakespeare.
把这个作家与莎士比亚进行了比较。
2.In all, about seven hundred sixty of them are experiencing natural decrease.
in all总共, 合计;总之
例句：There are fifteen books on the first shelf, twenty-one on the second, that makes thirty-six in all.
书架的第一层有15本书, 第二层有21本, 总共是36本。
3.Mr. Perry says this does not necessarily mean their population is dropping.
not necessarily未必，不一定
例句：It is not necessarily so .
我看是未必。
