政府已经开展了沿东部边境建造防御工事的工程。

The government has started building fortifications along its eastern border.

《柯林斯英汉双解大词典》

公司说已经开展了详细的调查。

The company said it had carried out a detailed investigation.

youdao

我们在反核恐怖问题上已经开展了大量工作。

We have already carried out a great amount of work in efforts against nuclear terrorism.

youdao

It's been in fact probably for the last 3 years or so.

已经开展了三年了。

普林斯顿公开课 - 人性课程节选

So as some of you probably know, Yale is undergoing an open education project and they're videoing several classes, and the idea of this, is to make educational materials available beyond the walls of Yale.

可能你们已经知道了,耶鲁大学正在开展一个教育项目,我们在录制一些课程的录像,这样做的目的是让,耶鲁外的人也能享受到这些教学资源

耶鲁公开课 - 博弈论课程节选