New words：

quarter [ˈkwɔtər]
n.三个月时间，季度；一刻钟；四等份之一

Sample Sentences：

It's a quarter past ten.
She cut the cake into quarters.
Three quarters of the theatre was full.
The theatre was about three quarters full.
We pay our rent at the end of each quarter.
It's (a) quarter to four now─I'll meet you at (a) quarter past.

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