n. 春,春天;弹簧,发条;跳,跃;(源)泉;出生vi. 跳,突然行动;涌现,突然出现vt. 突然提出(或说出)sprang, sprung, springing, springs
来源于古印欧语sprengh(快速的运动)。
例:Before the train stopped in the station, he sprang to his feet and jumped out. 火车还没有在车站停下,他就突然起身跳出车门。
