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:
They were like the involuntary movements of his own heart and blood.
他们就象是他自己的心脏和血液在自然地运动一般.
an involuntary cry of pain
不由自主的痛苦的喊叫
Absence of mind is altogether an involuntary thing.
发愣,是完全出自无意识的.