/ˈsʌdn ||; ˈsʌdṇ/adj done or happening quickly, or when you do not expect it 突发的；突然的:
a sudden decision/change 匆促的决定；突然的变化 ➔suddenly adv Suddenly, everybody started shouting. 突然间，大家都开始大叫。 ➔suddenness noun [U] all of a sudden quickly and unexpectedly 突然；出人意料: All of a sudden the lights went out. 灯突然熄了。 sudden death a way of deciding who wins a game where the score is equal by playing one more point or game 加赛决胜方式（比赛胜负未分而加赛后以先得分者为胜方的决胜方法）