"involuntary manslaughter"
"involuntary servitude"
"an involuntary shudder"
"It (becoming a hero) was involuntary. They sank my boat"
controlled by the autonomic nervous system; without conscious control;
"involuntary muscles"
"gave an involuntary start"
involuntary的用法和样例：
例句
用作形容词 (adj.)
All of the involuntary human subject research incorporates torture. 所有的非自愿的人类对象的研究都归入折磨。
In the next article in this series I will be covering breeding behaviour, and voluntary and involuntary artificial insemination. 在这一系列的下一篇文章我将会介绍育种行为，以及自愿和非自愿的人工授精。
These verbs mean to manifest involuntary vibratory movement. 这些动词意味着显示出不由自主的振动。
It's an almost involuntary thing and it also tells the person seeing this that he is sick. 这几乎是不由自主的动作，而且也告诉看到这些的人们，这个人病了。
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