yo-yo

n. 溜溜球

名词复数:yo-yos 动词过去式:yo-yoed 过去分词:yo-yoed 现在分词:yo-yoing 第三人称单数:yo-yos 

yo-yo

n.（名词）
【复数】 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.
游游拉线盘，溜溜球：由缠有细绳的扁线盘构成的玩具，通过手腕运动在手上翻转，然后收到手里
Informal One that undergoes frequent abrupt shifts or reversals, as of opinion or emotion; a vacillator.
【非正式用语】 优柔寡断的人：经常突然变换或彻底改变的人，如看法或感情；犹豫不决的人
Slang A person regarded as stupid or objectionable.
【俚语】 笨蛋，蠢人：被认作是愚蠢或令人讨厌的人
v.intr.（不及物动词）
yo-.yoed,yo-.yo.ing,yo-.yos 【非正式用语】
To undergo frequent abrupt shifts or reversals, as of opinion or emotion; vacillate.
犹豫不决：经常突然变换或彻底改变看法或感情；犹豫

来源：
[Originally a trademark]
[原先是一商标]