to do or complete something, especially that you have said you would do or that you have been told to do

Dr Carter is carrying out research on early Christian art. 卡特博士正在研究早期基督教艺术。

The hospital is carrying out tests to find out what's wrong with her. 医院正在进行检查，看看她得了什么病。

Our soldiers carried out a successful attack last night. 我们的战士昨晚发动了一次成功的袭击。

It is hoped that the kidnappers will not carry out their threat to kill the hostages. 希望绑架者不会如他们威胁所言将人质杀死。

Don't blame me, I'm only carrying out my orders/instructions. 别怪罪我，我只是奉命行事。