serving as or carrying out preparation for a task or undertaking
预备性的,准备性的
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more preparatory work is needed .还需要做更多的准备工作。
〈英〉 预备的,预科的
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preparatory schooling .预备教育。
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preparatory to as a preparation for 为…作准备的she applied her make-up preparatory to leaving . 她化了妆,准备出门
"late Middle English: from late Latin