七个

• heptad
• seven
• septenary
• septinary

例句

1. 他要养活自己的七个孩子，更不必说还有妻子和父母了
   He have to support his seven children, to say nothing of his wife and parents.
2. 七头政治由七个人联合进行的统治
   Government by seven persons.
3. 他要养活自己的七个孩子，更不必说还有妻子和父母了。
   He had to support his seven children, to say nothing of his wife and parents.
4. 上大学时，我有七个室友。
   I have seven roommates in my university.