易混淆的单词： CometComETCOMET

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Some even think a comet did them in .

有些人甚至认为是彗星干的。

The comet is already visible in 7x50 binoculars .

用7x50双筒已经可以看见这颗彗星。

If so , life may have started in a comet .

如果是真的，那么生命可能来自于一颗彗星。

Astronomers proposed comet impacts as a possible cause for these catastrophes .

天文学家认为彗星撞击可能是导致这系列大灭绝的罪魁祸首。

Researchers believe other comets are chemically similar to halley 's comet .

研究人员相信，其它的彗星在化学组成上与哈雷彗星相似。