a large underground chamber, typically of natural origin, in a hillside or cliff
(尤指天然形成的)洞穴。
explore caves as a sport
洞穴探险。
〈美〉 后面<Bold>cave in</Bold>的简称。
〈英,校园俚语,旧〉 当心!
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keep cave act as lookout 望风
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cave in (或cave something in ) (with reference to a roof or similar structure) subside or collapse or cause something to do this (屋顶等)下陷,坍塌,倒塌;使下陷,使倒塌the ceiling caved in 天花板塌了Len's club would have caved his skull in . 伦的棍子就可以把他脑袋打陷下去了 -
figurative yield or submit under pressure 〈喻〉 (在压力下)屈服,屈从the manager caved in to his demands . 经理屈从了他的要求
"Middle English: from Old French, from Latin