一刻钟
15 minutes
I waited a quarter of an hour and then went home. 我等了一刻钟然后就回家了。
I was there three-quarters of an hour. 我在那里逗留了3刻钟。
an hour and three-quarters 1小时45分钟
A quarter of an hour later, Jack arrived.
It should only take a quarter of an hour.
It only takes a quarter of an hour to walk into town.
He only spoke for a quarter of an hour and then took questions from the audience.
See also: quarter noun (FOURTH PART)