例句：
He joined the force twenty years ago.
他二十年前加入了警队。
The factory fell into disuse twenty years ago.
这个工厂二十年前就废弃了。
I was twenty years old and ready for anything.
我当时二十岁，什么都愿意去做。
It's twenty years since I've seen her.
我已经二十年没见她了。
She kept a diary for over twenty years.
她记了二十多年的日记。
There were fewer than twenty people there.
那里有不到二十个人。
Twenty guests are enough, I would have thought.
我觉得二十位客人就够了。
At last, after twenty hours on the boat, they arrived at their destination.
乘船二十小时之后，他们终于到达了目的地。
The company publishes twenty new titles a year.
这家公司一年出版二十种新书。
At that instant, the rear doors of a panel truck some twenty yards away flew open.
那时，大约二十码外的一辆小型货车后门突然敞开。
He finally won his freedom after twenty years in jail.
他蹲了二十年监狱以后终于获得了自由。
At least six people were killed and about twenty injured when a train was derailed in an isolated mountain region.
火车在一片偏僻的山区脱轨，导致至少六人死亡，约二十人受伤。
Could you run off twenty copies of the agenda?
你给我复印二十份会议议程好吗？
The agent spied for East Germany for more than twenty years.
该特工为东德从事了二十多年的间谍活动。
We've been here twenty years, near enough.
我们在这里待了差不多二十年了。
Dave and I go back twenty years.
我和戴夫相识有二十年了。
I'd been waiting for twenty minutes and I was getting impatient.
我等了二十分钟，有点不耐烦了。
Despite their size, these vessels carry small crews, usually of around twenty men.
虽然个头大，这些轮船载船员却很少，一般只有二十人左右。
We lost twenty minutes changing a tyre.
我们换轮胎耽误了二十分钟。
So that's twenty of each sort, right?
那么，每一种都是二十个，对不对？
He was taken off after twenty minutes.
二十分钟后，他被替换下场。
I've been waiting (for) twenty minutes.
我等了二十分钟。
These laws are in effect in twenty states.
这些法律在二十个州有效。
The government has put ten pence on the price of twenty cigarettes.
政府在每二十支香烟的价格上加征了十便士的税款。
Twenty workers lost their jobs when the department was rationalized.
在部门的合理化改革中，有二十名工人失业。
They met again after a gap of twenty years.
他们阔别二十年后又见面了。
The remaining twenty patients were transferred to another hospital.
其余的二十名病人被转送到另一家医院去了。
Four bottles of wine won't go far among twenty people.
四瓶酒不够二十人喝。
The party has kept its tenacious hold on power for more than twenty years.
这个政党已牢牢掌握大权二十多年。
He's working maybe twenty-five hours a week.
他一星期大约工作二十五个小时。