您要查找的是不是：
- 常用in common usage
- 可用do
- 不用need not
- 用法usage
- 有用useful
- 多任务分时系统multitask time-sharing system
- 家用home-use
- 基本时间分享系统,基本分时系统BTSS Basic Time Sharing System
- 用电electro-
- 在多道程序或分时系统中控制独立程序的活动的一种执行程序。An executive program that controls the activities of independent programs in a multiprogramming or time shared system.
- 没用useless
- 不用谢You're welcome
- 用手by hand
- 用力exert oneself (physically)
- 可用空间space available
- 用完use up
- 用来be used for
- 共用sharing
- 用药use medicine
- 用光finish up
