二十的英文：
twenty
20

How much is twenty divided by four?
二十除以四是多少?

In the twenties
二十多岁(的)

The admission fee is 20 cents each.
每张门票二十美分。

It's October 28.
是十月二十八日。

Eighty divided by four equals twenty.
八十除以四等于二十。

They married in their twenties.
他们是二十多岁结的婚

Your letter of the 28th instant
您本月二十八日的来函

I was twenty-one on my last birthday
我已经过二十一周岁了。

After the usher had been given twenty strokes she had to return to kowtow to Xifeng.
"那人身不由己,已拖出去挨了二十大板,还要进来叩谢."

The teaching staff numbers twenty two,fifteen women and seven men.
教师有二十二人，十五位女教师，七位男教师。

The children are now in their twenties. The temperature dipped into the twenties.
孩子们都已经二十多岁了。气温降到了二十多度

The temperature is minus twenty degrees.
温度是零下二十度。

Twenty percent of the products are exported.
百分之二十的产品外销。

Twenty people are held in the police raid.
在警察的突然搜捕中，20人被关押。

Four times five equals twenty.
4乘5等于20。