從「上廁所」怎麼講就可以知道兩個人交往到甚麼程度
Return on investment - Wikipedia, the free encyclopedia 如果一對男女在一起想大便時說“我去一下洗手間”,那他倆剛開始戀愛; 說“我去上廁所”,他們熱戀了; 說“我去大便”,他們同居了; 說“我去拉屎”,他們結婚了。。。。Return on investment (ROI) is the concept of an investment of some resource yielding a benefit to the investor. A high ROI means the investment gains compare favorably to investment cost. As a performance measure, ROI is ......
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