The only animals that can truly fly are birds, insects, and one type of mammal, which is of course the bat.

真正可以飞的动物只有鸟类、昆虫还有一种哺乳动物——当然那就是蝙蝠。

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But only the bat can fly like a bird.

但是，只有蝙蝠才能像鸟儿一样飞翔。

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A fly ball hit for Fielding practice by a player who tosses the ball up and hits it on its way down with a long, thin, light bat.

飞球运动员为防守练习而击打的腾空球，先将球抛起来，在球未落地前，用长而细的轻快球棒击打。

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"Bats are about the size of mice and they have very small teeth, and so if you have a bat fly into you or bump you, that bat may have just bitten you and you may not appreciate it, " he says.

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