动词
中文翻译：清除
同义词：
['preempt', 'clear', 'pre-empt']
例句：
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1. The engineer precleared the site before construction began.
工程师在施工开始前清理了现场。
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2. The company decided to preclear the project before it was announced.
公司决定在项目宣布之前先进行清理。
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3. Before the meeting, the chairman precleared any issues that might arise.
会议前，主席提前清除可能出现的任何问题。