There are nine hundred students in my school.
我的.学校有九百名学生。
If you are lonely, call the nine hundred number.
如果你觉得孤独，打900。
The area of this flat is around nine hundred square feet.
在太古城每平方英尺港币五千块的售价是很吸引人的。
Over nine hundred dollars they had cost him!
他为这套工具花费了900多美元。
Estimates are between five hundred billion and nine hundred billion dollars.
估计其价值在五千亿美元至九千亿美元之间。