秒 - second (1/60 minute)

countdown

second (unit of time)

speed per second; velocity per second

nanosecond; billionth of a second; ns

winning in a flash; instant defeat

five-second rule (food hygiene myth)

decays per second; disintegrations per second; dps

three-second rule (food hygiene myth)

number of seconds

one second

rapid progress; minute-by-minute progress

watt-second