当时是晚上七点。
Seven minus three is four (7 – 3 = 4).
七减去三等于四。
This must be done before the seven (7) days are up.
这是一定要做的前七(7)天是到了。
After seven (7) days, your account will be suspended if no other arrangements are made.
后七(7)天，你的帐户将被暂停，假如没有其他安排。
Hence the seven (7) percent utilization of this water in that part of the world.
因此，7(7 %)，利用这种水，在世界的这一部分。
Mike begins to do his homework at seven thirty (7:30) every evening.
每天晚上，迈克七点半开始做家庭作业。
Mike begins to do his homework at seven thirty (7:30) every evening.
每天晚上，迈克七点半开始做家庭作业。
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