They will tum out to be the second-largest species of birds to become extinct.

它们将成为第二大灭绝的鸟类。

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"We're going to become extinct," he said.

“我们将要灭绝，”他说。

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Without nature preserve, more animals are likely to become extinct.

如果没有自然保护区，很有可能更多的动物将要灭绝。

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Ms Rosin, an editor at Atlantic, whose book grew out of an article she wrote for the magazine in 2010, acknowledges that men are not about to become extinct any time soon.

ECONOMIST: Now is not a good time to be a man

That causes the victims' languages to become extinct.

ECONOMIST: The New World, it seems, really is new

Little is known about the dodo, a famous flightless bird thought to have become extinct in the 17th Century.

BBC: NEWS | Science/Nature | Dodo skeleton find in Mauritius