forty是什么意思？

Forty-eight of the students received instruction in study skills only, whereas the others attended a combination of study skills sessions and classes in which they learned about the growth mind-set and how to apply it to schoolwork.

One free social networking website turned out to successful because it limited each posting to one hundred and forty characters.

I have enough trouble delivering bikes to shops only forty miles away, never mind five thousand miles.

In the United States, up to forty percent of all food goes uneaten, despite the fact that one in seven American households lacks regular access to good food.

Your working life lasts an average of forty years, so it's important to find a job you like and feel enthusiastic about.