7
近义词：VII，seven，heptad，sevener，septenary，septet，
英英释义
Noun
- the cardinal number that is the sum of six and one
Adjective
- being one more than six
例句
- Iranian delegacy visited 7 days in Russia.伊朗代表团在俄罗斯访问了七天。
- The difference between 5 and 7 is 2.五和七之间的差额是二。