sieges
A siege is a military or police operation in which soldiers or police surround a place in order to force the people there to come out or give up control of the place.
We must do everything possible to lift the siege.
我们必须尽一切可能解除包围。
lay siege to something
If police, soldiers, or journalists lay siege to a place, they surround it in order to force the people there to come out or give up control of the place.
The rebels laid siege to the governor's residence.
叛乱者们包围了那座总督官邸。