他们只需要改进一下自己的技艺。

They just need to polish their technique.

《柯林斯英汉双解大词典》

他们只需要建立良好的联系。

They just have to make a good link.

youdao

现在他们只需要一个小时的车程就可以到达最近的城镇。

Now they spend just an hour driving to the nearest town.

youdao

We simply, kind of spontaneously, make the division.

我们只需要自己把他们区分开来。

耶鲁公开课 - 文学理论导论课程节选

Good, so in the standard story you've got these two crooks, or two accused crooks, and they're in separate cells and they're being interviewed separately--kept apart--and they're both told that if neither of them rats the other guy out, they'll go to jail for say a year.

在故事里有两个罪犯,他们都被指控了 被分别关进了牢房,他们俩被单独提审,两人都知道如果他们不坦白,他们都要只需要坐一年牢

耶鲁公开课 - 博弈论课程节选