He borrowed a mechanical book from me.

他从我这儿借了一本力学方面的书。

youdao

though there's no instruction book on a mechanical means to do this.

不过没有用机械方式做到这点的说明书。

youdao

though there's no instruction book on a mechanical means to do this.

不过没有用机械方式做到这点的说明书。

youdao