回复：my try

来源: NewVoice 于 2011-10-06 13:16:02 [档案] [博客] [旧帖] [给我悄悄话] 本文已被阅读：次 (402 bytes)

回答: my try 由 etcacct 于 2011-10-06 12:15:19

Very good!

the Earth magnetic field - the Earth's magnetic field

confirmed from animals - confirmed for animals or confirmed by studying animals

long time ago - a long time ago (it is better with "a")

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• 回复：回复：my try -etcacct- ♀ (62 bytes) () 10/06/2011 postreply 15:59:39

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