adv, adj [attrib 作定语] (allowing movement) in one direction only 单行（的）; 单程（的）
*I'll go by boat one way. 我单程坐船去.
* ,one-way `traffic 单行车辆
* a ,one-way `street 单行道
* a ,one-way (ie not a return) `ticket 单程票.

.one-'way
adj [usually before noun]
a one-way street is one in which vehicles are only allowed to travel in one direction
　the town's one-way system
especially AmE a one-way ticket is for travelling from one place to another but not back again
≠ round-trip
British Equivalent: single
a one-way process, relationship etc is one in which only one person makes any effort or provides anything