关 guān

mountain pass; to close; to shut; to turn off

it doesn't matter

to close (a door); to turn off (light, electrical equipment etc)

to be concerned about; to care about

to turn off (a machine or device); to finish shooting a film

relation; relationship; to concern

to pay attention to; to follow sth closely; to follow (on social media)

related; relevant; pertinent

customs (i.e. border crossing inspection)

pertaining to; concerning; with regard to

to close; to shut (a window etc); (of a shop, school etc) to shut down

crucial point; crux; key

care; solicitude; to show care for

to have sth to do with; to relate to; related to

unrelated; having nothing to do (with sth else)

mechanism; gear; machine-operated

to be related; to be connected; relationship; connection

power switch; gas valve; to open the city (or frontier) gate

to show concern and care for

joint (physiology); key point; critical phase

extremely important; vital; crucial

public relations

to switch off; to shut off

to take care; to keep an eye on; to look after

difficulty; crisis

to cross a barrier; to get through (an ordeal); to pass (a test)

juncture; moment

indifferent; insignificant

customs duty; tariff