continuance
continuance，continuation和continuity不同。continuance指“自动的继续”，continuation指“被动的继续”，continuity指“继续性”。用英语讲，continuance相当于不及物动词continue，continuation相当于及物动词continue，continuity相当于形容词continuous。可以说After a long continuance of poor health, he found continuation of work tiring since it required continuity of attention。
