eighteen

十八的、十八个

There were eighteen students waiting outside the classroom.

教室外面有十八个学生在等。

十八岁的

She started working here when she was eighteen years old.

她十八岁的时候就开始在这里工作了。

十八

Add eighteen to the total and write down the answer.

把十八加进总数，然后写下答案。

十八岁

You can vote in this country at eighteen.

在这个国家，满十八岁就可以投票。