例句：
He joined the force twenty years ago.
他二十年前加入了警隊。
The factory fell into disuse twenty years ago.
這個工廠二十年前就廢棄了。
I was twenty years old and ready for anything.
我當時二十歲，什么都愿意去做。
It's twenty years since I've seen her.
我已經(jīng)二十年沒見她了。
She kept a diary for over twenty years.
她記了二十多年的日記。
There were fewer than twenty people there.
那里有不到二十個人。
Twenty guests are enough, I would have thought.
我覺得二十位客人就夠了。
At last, after twenty hours on the boat, they arrived at their destination.
乘船二十小時之后，他們終于到達了目的地。
The company publishes twenty new titles a year.
這家公司一年出版二十種新書。
At that instant, the rear doors of a panel truck some twenty yards away flew open.
那時，大約二十碼外的一輛小型貨車后門突然敞開。
He finally won his freedom after twenty years in jail.
他蹲了二十年監(jiān)獄以后終于獲得了自由。
At least six people were killed and about twenty injured when a train was derailed in an isolated mountain region.
火車在一片偏僻的山區(qū)脫軌，導(dǎo)致至少六人死亡，約二十人受傷。
Could you run off twenty copies of the agenda?
你給我復(fù)印二十份會議議程好嗎？
The agent spied for East Germany for more than twenty years.
該特工為東德從事了二十多年的間諜活動。
We've been here twenty years, near enough.
我們在這里待了差不多二十年了。
Dave and I go back twenty years.
我和戴夫相識有二十年了。
I'd been waiting for twenty minutes and I was getting impatient.
我等了二十分鐘，有點不耐煩了。
Despite their size, these vessels carry small crews, usually of around twenty men.
雖然個頭大，這些輪船載船員卻很少，一般只有二十人左右。
We lost twenty minutes changing a tyre.
我們換輪胎耽誤了二十分鐘。
So that's twenty of each sort, right?
那么，每一種都是二十個，對不對？
He was taken off after twenty minutes.
二十分鐘后，他被替換下場。
I've been waiting (for) twenty minutes.
我等了二十分鐘。
These laws are in effect in twenty states.
這些法律在二十個州有效。
The government has put ten pence on the price of twenty cigarettes.
政府在每二十支香煙的價格上加征了十便士的稅款。
Twenty workers lost their jobs when the department was rationalized.
在部門的合理化改革中，有二十名工人失業(yè)。
They met again after a gap of twenty years.
他們闊別二十年后又見面了。
The remaining twenty patients were transferred to another hospital.
其余的二十名病人被轉(zhuǎn)送到另一家醫(yī)院去了。
Four bottles of wine won't go far among twenty people.
四瓶酒不夠二十人喝。
The party has kept its tenacious hold on power for more than twenty years.
這個政黨已牢牢掌握大權(quán)二十多年。
He's working maybe twenty-five hours a week.
他一星期大約工作二十五個小時。