pumping duration的用法和樣例：
例句
- Disease resulting from stress is related to the severity and duration of stress.
逆境帶來(lái)的疾病，同逆境的嚴重程度和歷時(shí)長(cháng)短有關(guān)。 - Over the nine-month duration of the experiment, the youngsters did indeed learn how to manipulate the joystick and buttons.
在歷時(shí)九個(gè)月的實(shí)驗期間，兒童確實(shí)學(xué)會(huì )了如何操作搖桿與按鍵。
