vain adj. Valueless; empty; trifling. 無價值的;空虛的;無足輕重的。 例句: vain words 空話。 Without force or effect; useless 無力的;無效力的;無用的。 例句: vain efforts 白費的努力。 Proud of small accomplishments or of personal appearance; conceited. (因小成就而)自詡的;自負的;愛虛榮的。 例句: She is vain of her figure. 她以自己的身材自負。 片語: vain glory 虛榮;自大。 in vain (a)無效的。(b)無結果的。 相關字:adv. vainly. n. vainness. occur (過去式: occurred; 過去完成式: occurred; 現在進行式: occurring) v.i. To happen or take place. 發生。 例句: The same mistake must not occur again. 同樣錯誤不可在發生。 To be found; exist. 出現;生存。 例句: Such plants occur in Africa. 這些植物生長在非洲。 To come to the mind. 使想起。 例句: Did it occur to you to go? 你曾要過要去嗎? It occurred to me that it was dinner time. 我想起那正是吃晚餐的時刻。