相反方向

He suddenly doubled and ran in the opposite direction.

他突然转身, 朝跑去。

North and south are opposite directions.

北和南是。

I've just had an inspiration; why don't we try turning it the other way!

我突然想出一个好主意—我们为什么不试着转一转呢！

A semicomplete multipartite digraph is obtained by replacing each edge of a complete multipartite graph by an arc or by a pair of two mutually opposite arcs.

摘要 用一条或一代替完全多部无图每一条边所得到有图被称为是半完全多部有图。

Double Rollers Crusher is used to crush clunch and partial shales for brick enterprises. It has two rollers to circumrotate in reverse. The clunch between rollers are crushed by extrusion.

双辊破碎机普遍用于粘土和部分混合原料生产砖瓦破碎设备，它有两个工作辊子作旋转，辊子间粘土受到挤压而破碎。