英語翻譯：

ignore; neglect; overlook; suddenly

例句：

1. 他忽然松開了我的臂膀。
   He suddenly released my arm.
2. 我一轉(zhuǎn)身，忽然看見了湯姆。
   Suddenly I turned and caught sight of Tom.
3. 我忽然想起一個好主意。
   A good idea suddenly occurred to me.
4. 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.