(1)秒(鐘)(sixtieth part of a minute)[C](符號為“″”)：Sixty～s make a minute. 60秒為一分鐘。look at sb for a few～s向某人看了一會兒(幾秒鐘);run/win/complete the race in 3 minutes and 46～s 以3分46秒跑完賽程/贏得賽跑/完成競賽;process millions of instructions per～(in a fraction of a～)每秒(瞬間)處理上百萬個指令;～hand秒針;
(2)(角或度的單位)秒(measurement of an angle equal to sixtieth part of a minute)[C](符號為“″”)：an angle of 14°5′16″(fourteen degrees，five minutes and sixteen～s) 一個14度5分16秒的角;There are 3600～s(3600″)in a degree.一度為3600秒。
(3)一會兒，片刻，瞬間(brief period，moment)(BrE，infml)(縮寫sec)：Please wait a～.請稍候。be ready/there/with sb in a～一會兒就好/一會兒就到那里/一會兒就與某人一起;I did not catch his meaning for a～.我一時間沒弄懂他的意思。〖同〗minute，moment