1. V-I If something bobs, it moves up and down, like something does when it is floating on water. 上下浮動(dòng)

Huge balloons bobbed about in the sky above. 巨大的氣球在上空上下浮動(dòng)。

2. V-I If you bob somewhere, you move there quickly so that you disappear from view or come into view. 快速移動(dòng)

She handed over a form, then bobbed down again behind a typewriter. 她遞過(guò)來(lái)一張表格，又快速坐廻到打字機(jī)後麪。

3. N a short abrupt movement, as of the head 點(diǎn)頭

4. N a hairstyle for women and children in which the hair is cut short evenly all round the head 波波短發(fā)

5. V to cut (the hair) in a bob 剪成波波造型

6. N [英國(guó)英語(yǔ)] →(formerly) an informal word for a shilling

7. V to tap or cause to tap or knock lightly (against) 輕敲; 使輕敲

8. N a light knock; tap 輕敲