adj.非自愿的；無意的；不由自主的

All of the involuntary human subject research incorporates torture. 所有的非自愿的人類對(duì)象的研究都?xì)w入折磨。

These verbs mean to manifest involuntary vibratory movement. 這些動(dòng)詞意味著顯示出不由自主的振動(dòng)。

It's an almost involuntary thing and it also tells the person seeing this that he is sick. 這幾乎是不由自主的動(dòng)作，而且也告訴看到這些的人們，這個(gè)人病了。