all of a sudden; sudden; suddenly

1. 起風了，雨點忽然落下來。
   A wind arose, and rain drops began falling all at once.
2. 那男孩忽然哭了起來。
   The boy began crying all of a sudden.
3. 我一轉(zhuǎn)身，忽然看見了湯姆。
   Suddenly I turned and caught sight of Tom.
4. 我忽然想起一個好主意。
   A good idea suddenly occurred to me.
5. 那水手忽然看到一名海盜跳上了甲板。
   The sailor suddenly saw a pirate jumping onto the deck.

忽的英語翻譯：

然的英語翻譯：