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- 常用in common usage
- 用a+bi来表示一个数，a和b是实数，i是虚数单位等于-1的平方根a number of the form a+bi where a and b are real numbers and i is the square root of -1
- 可用do
- 不用need not
- 用A代substitute A for B
- 用法usage
- 有用useful
- 不仅A而且not merely A but also B
- 家用home-use
- 与其说A不如说not so much A as B
- 用电electro-
- 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
