但19世纪的捕猎使其大部分被毁灭，据国际自然保护联盟(IUCN)的数据，仅19世纪40年代被屠宰的露脊鲸就多达3万只。

But hunting in the 19th century wiped out most of them, with up to30, 000 slaughtered in the 1840s alone, according to the InternationalUnion for the Conservation of Nature (IUCN).

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20世纪60年代苏联的偷猎，又毁灭了数百只以上，使北太平洋露脊鲸成为可能是地球上最为濒危的鲸鱼种类。

Poaching by the Soviet Union during the 1960s claimed severalhundred more, making Eubalaena japonica probably the most endangeredspecies of whale on Earth.

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甘肃敦煌-北山地区广泛出露早前寒武纪岩石。

Early - Precambrian rocks are widely exposed in Dunhuang - Beishan area, GansuProvince.

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