动词
中文翻译：Unknown
同义词：
['close', 'seal', 'close off', 'clamp', 'fasten例句：1. The engineer closed the mould to prevent air from entering during the casting process.（工程师关闭模具以防止在铸造过程中空气进入。）2. The mold was tightly closed to ensure that the product would be of consistent quality.（模具被紧紧封闭，以确保产品的质量保持一致。）3. The machine operator had to close the mould quickly before the material hardened too much.（机器操作员必须在材料硬化之前迅速关闭模具。）']
例句：
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1. The engineer closed the mould to prevent air from entering during the casting process.
工程师关闭模具以防止在铸造过程中空气进入。
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2. The mold was tightly closed to ensure that the product would be of consistent quality.
模具被紧紧封闭，以确保产品的质量保持一致。
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3. The machine operator had to close the mould quickly before the material hardened too much.
机器操作员必须在材料硬化之前迅速关闭模具。