闭塞

to stop up / to close up / hard to get to / out of the way / inaccessible / unenlightened / blocking

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

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

lit. to catch sparrows blindfolded (idiom) / fig. to act blindly