英汉释义：
num.
七;七个;第七
n.
七;七个
英英释义：
noun :
1.one of four playing cards in a deck with seven pips on the face
2.the cardinal number that is the sum of six and one
7的含义：
在埃及人看来,上帝用6天时间创造世界,第7天是休息日；天有7重,地有7层,一个星期有7天.所以,7就有着异乎寻常的意义,它是吉祥、崇高和幸运的象征.就连7的倍数,也是好数字。
与seven有关的词语：
the seven-year itch
(informal)
七年之痒（婚后七年另觅新欢的欲望）the desire for new sexual experience that is thought to be felt after seven years of marriage
seven的例句：
He is one of seven children. The only person Ive ever heard of that kids made fun of in school because his shoes did not match.
他有六兄弟姊妹，在我听过的人当中，因为穿著不是一对的鞋子上学而被同学取笑，他是第一个。
And Marley does more than just doggy paddle, this golden retriever loves to dive and swim right to the bottom of this seven-foot pool.
马莉会的可不只是狗刨式游泳，这只金色的寻回犬还喜欢潜水，可以直游到这个深七英尺深水池的底部。
Amount of illegal gains is huge or other especially serious nature, with three to seven years imprisonment and a fine.
违法所得数额巨大或者有其他特别严重情节的，处三年以上七年以下有期徒刑，并处罚金。