suddenly的詞根為sud
例句
1、
They suddenly became aware of people looking at them.
他們突然意識到有些人在瞧着他們。
2、
Suddenly it clicked ─ we'd been talking about different people.
我們突然領悟到原來我們談論的不是同一個人。
3、
It suddenly struck me how we could improve the situation.
我一下子明白我們如何能改善局面了。