This will bean extensive operation even for an open heart veteran like yourself.

即使对于一个像你这样经验丰富的心脏手术患者，这也会是一个扩大的手术。

It says the arrest took place in a town in the northern region, following an extensive security operation.

报道称，逮捕发生在北部地区的一个城镇，此前进行了大规模的安全行动。

Even here, we’ve only really scratched the surface of the SCP Foundation’s extensive and frankly mind-boggling global and historical operations.

即使在这里，我们也只是真正触及了 SCP 基金会广泛且坦率地令人难以置信的全球和历史行动的皮毛。