7的单词seven；
例句
Roll-call will be at 7 a.m.
早晨7点钟点名。
We got to San Diego at 7 oclock.
我们7点钟到达了圣迭戈。
The sum of 7 and 12 is 19.
7加12的和是19。
They work 7 days a week year-round.
一年到头他们每周工作7天。
I set the alarm clock for 7 o\'clock.
我把闹钟定在7点钟闹响。
I misread the 1 as a 7.
我把1错当成7了。
