one-way

形容词 one-way:

1. moving or permitting movement in one direction only

1. I'll go by boat one way.
   我单程坐船去。

one-way

adj.Abbr. OW（形容词）缩写 OW
Moving or permitting movement in one direction only:
单向的：允许朝或只能朝单方向运动的：
例句：
a one-way street.
单行道

Providing for travel in one direction only:
单程的：单程旅行的：
例句：
a one-way ticket.
单程票