become extinct

常见例句

In America, 53 languages have become extinct since 1950, more than in any other country.
美国自从1950年以来已有53种语言灭绝，比其它任何国家都要多。
An animal species will become extinct if it fails to produce enough young in each generation.
一个动物物种如果不能在每一代生育足够数量的后代,那它就要灭绝.
More mammals have become extinct in that country over the last 200 years than in any other place in the world.
在过去的200年前，这个国家中灭绝的哺乳动物物种比世界上的其他任何地方都要多。

Atlantic bluefin tuna is being overfished and there are fears it could become extinct.

And, yes, the coral reefs might become extinct, and people from the Seychelles might go hungry.
NEWYORKER: The Climate Fixers
But as sure as rampaging dinosaurs have become extinct, the days of outsized-living CEOs are over.
FORBES: Boardroom Bad Boys
We need to get the infrastructure in place before more illegal logging and poaching takes place, and more species become extinct.
FORBES: How the Life of a Chipmunk in Michigan Came to Save Elephants and a Million Acres in Cambodia