once in a while


简明英汉词典
	once in a while
	adv.
	偶尔
现代英汉词典
	while
	[waIl; (?@) hwaIl]
	n.
	一会儿
	a long while
	好长一会儿
	A short while ago, however, he became a busdriver and he has not regretted it.
	可是,不久前他当了一名公共汽车驾驶员,而且他不后悔。
习惯用语
	once in a while
	有时；偶而
	worth one's while
	值得；有价值
词性变化
	while
	conj.
(1)	…的时候
	While in Vienna he studied music.
	他在维也纳时学习音乐。
	While he was eating, I asked him to lend me $2.
	当他正在吃饭时,我请他借给我二英镑。
	While two detectives were keeping guard at the door, two others opened the parcel.
	这时两个侦探把着门,另外两个打开包裹。
	While I read, she sang.
	我看书时，她在唱歌。
	I met her while I was at school.
	当我在学校的时候我遇见了她。
(2)	虽然；但是
	While I understand what you say, I can't agree with you.
	虽然我理解你的意思，但我还是不同意。
	You like tennis, while I'd rather read.
	你爱打网球，但我爱看书。
	(= whilst)
词性变化
	while
	vt.
	whiled, whiling
	（与away连用）消磨；度过
	They while away many afternoons on the beach.
	他们在海滩消磨了许多个下午。
	while
	adv.
	（前面与表示时间的词连用）在…时候
	the summer while I was abroad
	我出国的那个夏天
现代英汉综合大辞典
	once
	[wQns]
	adv.
(1)	一次
(2)	曾经; 从前
(3)	一旦; 一度
(4)	[用于否定句]一次也(不); 完全(不)
(5)	乘以一; (亲属间行辈上)小一辈; (程度上)相差无几
	once a year
	一年一次
	a once powerful nation
	曾很强盛的国家
	a cousin once removed
	堂[表]兄弟[姊妹]的孩子
	If the facts once become known, he will be punished.
	事实一旦公开, 他就要受到惩罚。
	I couldn't once understand what he meant.
	我完全不懂他的意思。
	Once one is one.
	一一得一。
词性变化
	once
	conj.
	一旦, 每当
	Once you begin you must continue.
	你一旦开始, 便不可停下来。
	n.
	一次, 一回
	Once is enough for me.
	对我来说一次就够了。
	adj.
	从前的
	a once friend
	从前的一个朋友
继承用法
	once-forbidden
	adj.
	一次禁戒的
	once-through
	n.
	强制循环
习惯用语
	all at once
	突然; 同时
	at once
	立刻, 马上; 同时
	every once in a while
	[美]偶而
	for this once (=for once, just for once)
	就这一次; 破例一回
	if once (=when once)
	一旦
	more than once
	不止一次, 多次
	not once
	一次也不
	once again
	再一次
	once and again
	一再, 再三
	once and away
	一劳永逸; 限此一次; 断然, 爽快
	once for all
	一劳永逸; 永久地; 彻底地
	once in a while
	有时, 间或, 偶而
	once more
	再一次
	once again
	再一次
	once or twice
	一两次; 有时, 偶尔
	once over lightly
	从头到尾马马虎虎地
	once too often
	又(多了)一次
英汉船舶大词典
	once in a while
	adv.有时,不时地,偶而
英汉航海大词典
	once in a while
	adv.有时,不时地
英汉化学大词典
	once in a while
	adv.间或,偶而

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