词典释义：
释义
on the highest point or uppermost surface of
在最高处，在顶端，在最上面
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a town perched on top of a hill .一座山顶城市。
so as to cover; over
覆盖；盖住
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his habit of wearing one v-neck jumper on top of another .他那在一件V字领套头毛衣外面再套一件的习惯。
他无法胜任自己的工作。
in addition to
另外
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on top of everything else he's a brilliant linguist .另外，他还是个出色的语言学家。
in close proximity to
紧挨着
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we all lived on top of each other .我们彼此都住得很近。
