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seven英 ['sevn] 美 ['sevn]
num. 七
词汇搭配
seven seas 世界七大洋(即北冰洋... Seven Sisters 昂宿星团; 北斗星团...
seventy times seven 很大的数目 on cloud seven 极幸福
例句
用作数词 (num.)
1、There are seven continents in the world.
世界上有七大洲。
2、Four multiplied by seven is twenty-eight.
7乘4等于28。
扩展资料：
近义词的用法
heptad英 ['heptæd] 美 ['heptæd]
n. 七个；
英英释义Noun:
the cardinal number that is the sum of six and one
基数，即6和1之和
例句
Construction and expression of heptad repeat region of canine distemper virus fusion protein
犬瘟热病毒融合蛋白七肽重复区基因的克隆表达
Cloning and Expression of Heptad Repeat Region of the Feline immunodeficiency virus and Product Purification
七肽重复区基因的克隆表达及其产物的纯化
VivianYan~
seven 英 [ˈsevn] 美 [ˈsɛvən]num.七;七个;第七n.七;七个例句：She's been married for seven years and has two daughters.她已经结婚7年了，有了两个女儿。
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