speculator rs demand的用法和樣例：
例句
- The lifetime of an average speculator is measured in months, not years.
一個(gè)投機者的生命是用月來(lái)度量的，不是年。 - There is no harm in making a few mistakes and a few small losses because small losses are the expense of a successful speculator.
犯一點(diǎn)錯誤以及蒙受一點(diǎn)損失是沒(méi)有害處的，因為少量的損失是一個(gè)成功投機者的學(xué)費。
