略知

1.He has a superficial knowledge of this subject.

这门学科略知皮毛。

2.Edward had only a smattering of Welsh.

爱德华威尔士语只略知一二。

3.You need at least a nodding acquaintance with the rules of chess to understand the book.

你得国际象棋的规则略知一二才看懂这本书。