根底

根底 [gēn dǐ]

1. ■ （基础） foundation:

根底浅 have a shaky foundation;

根底很好 have a solid foundation

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常用词组

1. ■ （底细） ins and outs; cause; root:

知根底 know the ins and outs; get to the root of a matter;

追问根底 inquire into the cause of the matter