two-line

These two lines coincide with each other.

这两条线相重合。

The two lines of bones are set perpendicular to one another.

这两排骨头相垂直。

79. either of two lines that connect a horse's harness to a wagon or other vehicle or to a whiffletree.

一个或两个把马轭连马车或其他交通工具连马车上绳子。