suddenly 是 sudden的派生词

词义参考：

sudden

英 [ ˈsʌdn ] 美 [ ˈsʌdn ]

adj.

突然的，未预见到的; 急躁的，仓促的; 快的，迅速的; 急剧

例句

1.

"I think I'll try a hypnotist," I said with sudden resolution.

“我会找催眠师试试，”我突然坚决地说。

2.

He felt a sudden sense of calm, of contentment.

他突然感到一种安宁和满足.

3.

The sudden onset of winter caused havoc with rail and air transport.

冬天的突然降临让铁路和航空运输系统陷入混乱。