英音[?s?d?nl?] 美音[?s?dn:l?] 。
例句：Suddenly he began to shriek loudly。突然他開始大聲尖叫起來；All sorts of problems assailed us suddenly。我們突然遇到各種各樣的難題；The curtain was suddenly drawn and a bright light shone in。突然窗簾拉了開來，壹道強光照了進來。
近義詞：abruptly?突然地、unexpectedly?未料到地、instantly?立即地、hastily?匆忙、immediately?立即、headlong?頭向前的、all of a sudden?突然、rapidly?迅速地、swiftly?迅速地、out of the blue?出乎意料地、quickly?迅速地。
村子裏突然響起了銅鑼聲，不知道出了什麽事情。
Gongs rang out suddenly in the village, but no one knew what had happened。