您要查找的是不是：
- 常用in common usage
- 用a+bi來表示一個數，a和b是實數，i是虛數單位等於-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
- 不僅A而且not merely A but also B
- 家用home-use
- 與其說A不如說not so much A as B
- 用電electro-
- 沒用useless
- 不用謝You're welcome
- 用手by hand
- 用力exert oneself (physically)
- 可用空間space available
- 用完use up
- 用來be used for
- 共用sharing
- 用藥use medicine
