名词中文翻译
中文翻译：向上的洞
同义词：
['upward opening', 'upward passage']
例句：
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1. The worker found the upward hole in the wall and started to climb up.
工人发现墙上的向上孔洞，开始往上爬。
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2. The tunnel had an upward hole that led to a small cave.
隧道有一个向上的孔洞，通往一个小洞穴。
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3. The engineer made an upward hole in the wall to install the new pipe.
工程师在墙上开了一个向上的孔，以便安装新的管道。