Why does Bruce Wayne spend millions dressing up as a bat?

为什么布鲁斯·韦恩要花数百万美元打扮成蝙蝠的样子？

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They can detect ultrasound; this means that when a bat approaches, the moth can detect the bat's presence.

它们可以探测到超声波；这意味着当蝙蝠靠近，飞蛾可以察觉到它的存在。

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Anna's got a bat.

安娜获得了一个球棒。

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The work was influenced by Mr.Sfirri's son who requested a home-made baseball bat.

VOA: special.2011.01.14

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