each [iːtʃ] 每;每个
each other 彼此;互相
impolite [ˌɪmpəˈlaɪt] 不礼貌的
We each have our own car.
The teacher gave each child an apple.
How much do your parents earn each month?
We must help each other.
If you love each other, why not get married?
It is impolite to ask about other people's income.
Some people think it is impolite to ask someone's age.
earn [ɜːrn] 赚;赢得;挣钱
income [ˈɪnkʌm] 收入;收益;所得