名詞 yo-yo:

1. a toy consisting of a spool that is reeled up and down on a string by motions of the hand

1. The price of petrol is going up and down like a Yo-Yo.
   汽油的價格像悠悠一樣忽上忽下。

yo-yo

n.（名詞）
【復(fù)數(shù)】 yo-.yos
A toy consisting of a flattened spool wound with string that is spun down from and reeled up to the hand by motions of the wrist.
游游拉線盤，溜溜球：由纏有細(xì)繩的扁線盤構(gòu)成的玩具，通過手腕運(yùn)動在手上翻轉(zhuǎn)，然后收到手里
Informal One that undergoes frequent abrupt shifts or reversals, as of opinion or emotion; a vacillator.
【非正式用語】 優(yōu)柔寡斷的人：經(jīng)常突然變換或徹底改變的人，如看法或感情；猶豫不決的人
Slang A person regarded as stupid or objectionable.
【俚語】 笨蛋，蠢人：被認(rèn)作是愚蠢或令人討厭的人
v.intr.（不及物動詞）
yo-.yoed,yo-.yo.ing,yo-.yos 【非正式用語】
To undergo frequent abrupt shifts or reversals, as of opinion or emotion; vacillate.
猶豫不決：經(jīng)常突然變換或徹底改變看法或感情；猶豫

來源：
[Originally a trademark]
[原先是一商標(biāo)]