形容詞 one-way:

1. moving or permitting movement in one direction only

1. I'll go by boat one way.
   我單程坐船去。

one-way

adj.Abbr. OW（形容詞）縮寫 OW
Moving or permitting movement in one direction only:
單向的：允許朝或只能朝單方向運動的：
例句：
a one-way street.
單行道

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