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He gave an involuntary smile.是什么意思？

He gave an involuntary smile.

他不由自主地笑了一下。

相关词汇
he gave an involuntary smile

he

pron. 他，它，一个人；n. 雄性动物；
例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

gave

v. 给予，赠送( give的过去式 )，（与名词连用描述某一动作，意义与该名词相应的动词相同），供给，交给；
例句
He gave a detailed account of what happened on the fateful night...
他详细描述了那个灾难性夜晚所发生的事。

an

art. 一（在元音字母前代替不定代词a），一任一某一，一个；
例句
He started eating an apple...
他开始吃苹果。

involuntary

adj. 无意识做出的，非故意的，非自愿的，不随意的，不由自主的；
例句
Another surge of pain in my ankle caused me to give an involuntary shudder.
脚踝突然又一阵疼痛，痛得我直打哆嗦。

smile

n. 微笑，笑容；vt. 以微笑表示，以微笑完成；vi. 微笑，赞许，不在乎；
例句
He answered her smile with one of his own...
他对她的微笑回以同礼。
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
This book is a real masterpiece.
这本书是真正的名著。
a secret dossier
秘密档案
He does daily exercises to help control his weight.
他为控制体重而每天坚持锻炼。
Cold weather constrained the plant's growth.
寒冷的天气抑制了植物的生长。
Government inspections ensure a high degree of uniformity in the standard of service.
政府检查确保了在服务标准方面的高度一致。
We are anxiously awaiting the outcome of their discussion.
我们急切地等待着他们讨论的结果。
Marihuana has been used for medicinal purposes since antiquity.
大麻自远古以来就被作为药用。
You must work harder yet.
你必须更努力些。
In the first week the moon is in its first quarter, in the third week it is in its last quarter.
第一个星期月亮处于上弦月的状态, 第三个星期月亮处于下弦月的状态。
He is as swift of foot as a hare.
他跑得像兔子一样快。