This break in Earth's history is marked by a mass extinction, when as many as half the species on the planet became extinct.

地球历史上的这次重大灾难以物种的大量消亡为标志；当时，地球上多达一半的物种都灭绝了。

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Mrs Clinton had barely half as many cyberpals, while the Republicans were nowhere.

希拉里则只有不足他一半的网络拥护者，而共和党已经到处都是。

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Just 475 will be ordained this year, half as many as 40 years ago.

今年仅有475名牧师被正式任命，仅仅为40年前的一半。

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In many countries, women are half as likely as men to use fertilizers to increase the amount of crops.

VOA: special.2011.03.22

As many as one hundred crystals may join to form a snowflake larger than two and one-half centimeters.

VOA: special.2011.01.11

Snowflakes come in different sizes. As many as one hundred crystals may join together to form a snowflake larger than two and one-half centimeters.

VOA: special.2010.01.05

Half as many law enforcement in a combat zone where we didn't speak the same language.

NPR: Patrick Murphy: From Iraq War to Congress

's Fox have yet to announce their fare, half as many pickups are expected.

FORBES: Magazine Article

Just 475 will be ordained this year, half as many as 40 years ago.

ECONOMIST: The pain of the sex-abuse scandal may be helping the church