7用英语怎么说

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