n.比较随便的打招呼,近似于"What' up?" "Hey!;
例句:
Back in those days my equity used to swing up and down like a yo-yo.
过去,我的资金总是上上下下,像溜溜球一样.
Li Dong is playing with a yo-yo.
李东正在玩溜溜球.
The price of petrol is going up and down like a Yo-Yo.
汽油的价格像悠悠一样忽上忽下.