He kept bouncing up and down like a yo-yo .他像个悠悠球似的蹦蹦跳跳。Don't talk to him, he is a real yo - yo.不要跟他说话, 他真是个摇摆不定的呆瓜.My emotions went up and down scale a yo - yo.当时我的情绪就好象悠悠轮一样忽上忽下....

n.溜溜球（一种线轴般的玩具），优柔寡断的人，〈美俚〉蠢人，笨人adj.上下起落的，摇摆不定的v.玩约约，忽上忽下...

yo-yo的音标：yo-yo的英式发音音标为：['jəʊjəʊ]yo-yo的美式发音音标为：['joˌjo]...

yo-yo的复数形式为：yo-yos...