一二

Edward had only a smattering of Welsh.

爱德华对威尔士语只略知一二。

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

你得对国际象棋的规则略知一二才能看懂。

Being the residual island are of the convergent plate subducted to the south, the central Baiyin Minerogenetic Belt is located at the southeast edge of the north Qilian Caledonian eugeosyncline.

摘要内蒙油房一二把伙地区位于华北地台北缘南兴安晚华力西期地槽褶皱带，中生代火山岩系发育，燕山期中酸性岩浆活动强，了一系列火山、潜火山热液型银多金属矿床。