nibble at

中英例句：

1. I felt a nibble at the bait.
   我感到(有魚)輕咬一下餌。
2. He didn't answer, but just continued to nibble at his food.
   他沒有回答，只是繼續一點一點地吃東西。
3. She never had much for breakfast. She would drink a cup of coffee and nibble at a piece of bread.
   她早飯一向吃得不多。她通常喝一杯咖啡，啃一片麵包。