The mercury level in fish depends on its species, age, foraging mode and habitat.

鱼类中的水银含量，视乎其品种、年龄、觅食模式和生活水域而定。

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Of that group, 63 people had blood mercury levels more than twice the recommended level and 19 showed blood mercury levels four times the level considered safe.

在这一组人中，63人血液中汞含量是建议值的两倍以上，而且有19人血液中汞含量是认可安全值的4倍。

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The women who gave birth more than two weeks early were three times as likely to have double the average mercury level in their hair samples, the researchers said.

研究人员称，早产时间大于两周的孕妇，头发中平均汞含量是其他妇女的两倍。

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Radio drama rose to the level of art with The Mercury Theatre on the Air, founded by Orson Welles and John Houseman.

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Tom Wolfe, in his book "The Right Stuff, " about the original Mercury astronauts, wanted to describe for readers just what level of devotion the newly named astronauts had received from the American people.

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"What we found for our 124 sharks that we sampled was that about one-third of them came in with mercury levels that were over the Food and Drug Administration's action level of one part per million, " said Hueter.

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