闭门塞窦

to close doors and block openings (idiom); mounting a strict defense

to close / to stop up / to shut / to obstruct

to close a door

gate / door / CL:扇[shan4] / gateway / doorway / CL:個|个[ge4] / opening / valve / switch / way to do something / knack / family / house / (religious) sect / school (of thought) / class / category / phylum or division (taxonomy) / classifier for large guns / classifier for lessons, subjects, branches of technology / (suffix) -gate (i.e. scandal; derived from Watergate)

Serbia / Serbian / abbr. for 塞爾維亞|塞尔维亚[Sai1 er3 wei2 ya4]

to stop up / to squeeze in / to stuff / cork / stopper

strategic pass / tactical border position

to stop up / to stuff / to cope with

surname Dou

hole / aperture / (anatomy) cavity / sinus