"They're just doing their military preparedness and doing their operational exercises and it's for those air defense purposes, and anti-ship purposes.

VOA: standard.2009.05.26

Now, mind you, it was 20 years ago that this program was operational, 20 years.

现在，提醒你们，这是20年前,运行的一个程序，20年了。

哈佛公开课 - 计算机科学课程节选

The prosecution argued that it was caused by a design defect in the plant and negligent operational practices.

VOA: standard.2010.06.10

They simply have to infiltrate a group that has its own operational capacity and redirect some of that capacity towards the West.

VOA: standard.2010.05.05

What al-Qaida's greatest strength and its most dangerous capability today is the ability to indoctrinate and infiltrate other established militant groups that have operational capacity."

VOA: standard.2010.05.05

"If that support comes to you, it is an extra bonus for your operational strategy.

VOA: standard.2009.06.18

U.S.officials never acknowledge these strikes, saying they do not discuss operational or intelligence matters.

VOA: standard.2009.10.27

This agreement will have an immediate operational effect,".

VOA: standard.2009.12.09