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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If the kids break down and stomp and scream on the airplane, remember that half of the people there have been in your shoes.

如果孩子在飞机上失控、跺脚、大声尖叫，记住半数人会站在你的立场上。

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Can you break this pill in half for me?

你能帮我把这药丸掰成两半吗？

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The ball may disintegrate into a powder, or break in half, or hit up against its earlier self at just such an angle so as to enter the wormhole in just such a way that even more peculiar events occur.

NEWYORKER: The Region of Unlikeness

Lin's team owned a 13-2 edge in fast-break points in the opening half.

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Real Madrid continued to dictate proceedings but Atletico were always a threat on the break in the first half and equalized through Costa.

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