为主要事项做准备；初步的,介绍性的,预备的。；表示在更重要的事情之前或为其准备的行动或事件；旨在在继续之前熟悉情况
为主要事项做准备；初步的,介绍性的,预备的。
In preparation for the main matter; initial, introductory, preparatory.
表示在更重要的事情之前或为其准备的行动或事件；旨在在继续之前熟悉情况
denoting an action or event preceding or in preparation for something more important; designed to orient or acquaint with a situation before proceeding
a preliminary investigation
初步调查。
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