Cases in which many species become extinct within a geologically short interval of time are called mass extinctions.

许多物种在地质上很短的时间间隔内灭绝的情况称为大灭绝。

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Gause performed numerous tow-species experiments in the laboratory, in which one of the species became extinct when only a single kind of resource was available.

高斯在实验室里进行了许多双物种实验，其中一个物种在只有一种单一资源的情况下就灭绝了。

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The Russian biologist G. F. Gause performed numerous tow-species experiments in the laboratory, in which one of the species became extinct when only a single kind of resource was available.

俄罗斯生物学家 G. F. Gause 在试验室进行了大量的两个物种的实验，试验中，当只有单一的资源时，其中一个物种将会灭绝。

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"A citizen scientist outside Peoria actually sent in a photograph of a species of bumblebee, the rusty patched bumblebee,bombus affinis, that was thought to have gone extinct in that area, and was recovered by a private citizen with a digital camera."

VOA: special.2011.05.24

Environmental activists say plans by Laos to build a dam in the Don Sahong area near the Cambodian border could doom the nearly extinct Irrawaddy dolphin.

VOA: standard.2010.01.11

The hope of all those who took part in both the DNA tests and the funeral procession is that a databank will be created of the real Venetian, who risks becoming extinct.

VOA: standard.2009.11.14

Due to a reduction in forests, goshawks became extinct as a breeding species in Britain at the end of the 1800s.

BBC: Goshawks found poisoned near Exeter

Without giving too much away, a near-extinct ancient race makes a cameo experience.

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If a foreign State ceases to exist under international law and, consequently, a bilateral treaty between the extinct State and the United States lapses, the President cannot use the "receive Ambassadors" clause to bring a new treaty into force between the United States and a successor to the extinct State without Senate advice and consent.

CENTERFORSECURITYPOLICY: Center For Security Policy