They have worked here for three years.
他们在这里工作了三年。
They have worked for tree hours this morning.
他们今早工作了三个小时。
We can imagine how hard they have worked.
可以想见，他们付出了多么艰苦的努力。
They have worked out a new plan of attack.
他们制定出了新的进攻计划。
They have worked out a plan to visit Beijing.
他们制定好了去北京的计划。
They have worked for three hours this morning.
他们今早工作了三个小时。
They have worked here since they left college.
他们毕业后就在这里工作。
They have worked here since they came to this city.
他dip18封装尺寸们从到这个城市就在这工作。
They have worked very hard and I am so proud of them!
这些孩子学习都非常的努力和认真，我为你们而感到骄傲！
They have worked out the stratagem to attack the enemy.
他们已经想出了攻击敌人的策略。
They have worked so hard to give us children a good life.
他们辛苦工作，为了要给我们过好的生活。
They have worked out a quick solution for dealing with the problem.
他们已经研究出了对付这个问题的快速解决方法。
This is the mysterious something which they have worked so hard to find.
这就是他们付出极其艰辛的劳动所要寻找的那种神秘的东西。
They have worked very hard and they both have very good futures ahead of themselves.
他们非常努力，他们两人面前都有非常美好的未来。
They have the deepest affection for the old professor since they have worked with him.
自打同这位老教授一同工作以来，他们就对他怀有最深切的感情。
Slowly, they have worked their way into the higher echelons of discipline after discipline.
渐渐地她们已经加入了各个学科的最高一级的梯队里。
They worked together in the 1960s, and have kept in contact ever since.
他们在20世纪60年代曾一起工作，自那时起就一直保持着联系。
Scientists have worked for twelve years to develop what they call Green Super Rice.
科学家们已经花费了十二年时间来研制他们所谓的绿色超级稻（Green Super Rice）。
These guidelines have worked for me, perhaps they can save you some time and effort.
这些原则对我是有效的，也可能会帮您节省时间和精力。
They may also have worked on projects with similar design and project management problems.
他们可能曾在有相似设计或管理问题的项目上工作过。
How long have they worked there?
他们在那里工作多久了？
I have worked with them for three years and I believe what they say.
我已经和他们共事三年了，我相信他们说的话。
How long have they worked here?
他们在这里工作了多久了？
There have been great scientists in the East, but they never worked.
东方曾经有过伟大的科学家，但是他们从来没有工作。
Some couples have this one all worked out the second they know they're pregnant.
一些夫妇在知道他们怀孕的那一刻就想好了名字。
After he was adopted they worked hard to just have the necessities of life.
他被领养后，一家人努力工作，也就只够维持生计。
After he was adopted they worked hard to just have the necessities of life.
他被领养后，一家人努力工作，也就只够维持生计。
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