英语词汇隧道顶部坍塌是什么意思，隧道顶部坍塌的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-电脑手机教程网

单词	隧道顶部坍塌
释义	DEFINITIVE EXAMPLES 权威例句Ten miners were trapped underground when the roof of the tunnel fell in (= dropped down because of lack of support).隧道顶部坍塌，十名矿工被困在地下。剑桥国际
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