名词
中文翻译：清关
同义词：
['clearance', 'customs clearance', 'entry clearance']
例句：
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1. The companyneeds to clear its goods through customs before they can be exported.
该公司需要通过海关清关，才能将其货物出口。
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2. The shipment was cleared by customs at the port of entry.
该货物在入境港口被海关清关。
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3.The importer must provide all necessary documents for customs clearance.
进口商必须提供所有必要的文件以供海关清关。