late 14c., from Old French usable "available, in use" (14c.), from user (see use (v.)). Not a common word before c. 1840, when probably it was re-formed from use (v.) + -able. Related: Usably.
权威例句
1. This device helps make virtual reality a more usable and accessible technology.
这一装置有助于使虚拟现实成为更可用、更便利的技术。
2. Half of the island's population has no usable English.
这座岛上的居民有一半无法用英语交流。
3. Charity shops and jumble sales welcome usable clothes.
慈善商店和义卖活动欢迎大家捐助能穿的衣服。
4. The bike is rusty but usable.
自行车生锈了,但还能骑。
5. The manuscript might be usable if the author could fill it out a little.