bob up
US /bɑːb ʌp/
UK /bɒb ʌp/
短语动词
突然出现, 浮起
to rise or appear suddenly or unexpectedly, especially to the surface of water
示例:
•
The cork bobbed up to the surface of the water.
软木塞突然浮出水面。
•
New problems keep bobbing up every day.
每天都有新问题不断冒出来。