base of operations

基本解释

In 1995, he bought a traditional Ottoman house with a courtyard in Urfa, a city of nearly a half-million people, to use as a base of operations.
买下了一个带有庭院的传统的土耳其房屋，作为掌控一切发掘作业的基地。
For weeks the Afghan Taliban’s military chief, a former Guantánamo inmate, had raced from meeting to meeting in and around his base of operations, the Pakistani city of Quetta.
几个星期以来，这位阿富汗塔利班军队首领，前关塔那摩监狱囚徒，一直忙着在他的作战基地--巴基斯坦的奎塔的内部及周边地区开会。
Yemeni officials say they are releasing about 170 detainees with suspected ties to al-Qaida, two weeks after al-Qaida said it would use Yemen as its base of operations for the Arabian peninsula.
也门官方称，他们释放约170名囚犯因此被怀疑与基地有联系，两个星期后基地组织表示，将利用也门作为其在阿拉伯半岛行动的基地。

Bereket told reporters, pro-government Somali militias have permission to use Ethiopia as a base of operations in attacking al-Shabab rebels, who control large sections of southern Somalia.
That same Quinnipiac poll also found that by a margin of 59 to 34 percent, Americans believe that preventing terrorists from using Afghanistan as a base of operations is still a worthwhile goal for the United States.
"The report also fails to deal adequately with the asymmetrical nature of the conflict or to assign appropriate responsibility to Hamas for its decision to base itself and its military operations in heavily populated areas,".

Any non-governmental organization (NGO) can register, and your base of operations need not be Europe.
CENTERFORSECURITYPOLICY: Center For Security Policy