单词：free roller conveyor
[网络] 自由滚子输送机
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And in doing so, we were breeding them for parasitism. 为了做到这点，人类用喂养的方式来让它们寄生于我们。 We were giving them all sorts of reasons to adapt new ways. 我们给了动物们适应新环境的各种理由。 So,
发表于:2019-01-18 / 阅读(31) / 评论(0)
TED演讲娱乐篇
TED演讲娱乐篇
How Eggs Get Their Color 鸟蛋颜色的形成 Depending on the species, bird eggs can be any color rang ing from chickens plain white to a robins blue, streaked , spotted, bright, pale, and anything in between. We take a look at some of the reasons
发表于:2019-02-24 / 阅读(64) / 评论(0)
英语听力文摘 English Digest
英语听力文摘 English Digest