She shivered involuntarily as he approached her.

他离她越来越近，她由自主颤抖起来。

I found myself shaking uncontrollably with cold.

我发现自己冷得由自主哆嗦。

Oliver smiled in spite of himself.

奥利弗由自主笑了笑。

This music sets your feet tapping.

这音乐能使你由自主跟着拍子。

Eventually, his curiosity got the better of him and he had to take a look in the box.

最后，他好奇心占了上风，他由自主盒子看了一眼。

Uncontrollable laughter seized us.

我们由自主大笑起来。

He gave an involuntary smile.

他由自主笑了一下。

Her eyes strayed involuntarily.

她目光由自主移了。

Meg gave an involuntary exclamation.

梅格由自主叫了起来。

For example, once a girl found I like nictation, she said because I through that way to attractive others eyesight and show my beauty, actually my behaviour is empty-headed.

比如上大学时候有女孩说我总是喜欢眨眼睛，以此来显示自己长得错，觉得自己很了起样子，其实很浅薄。其实只是因为我戴着隐形眼镜，眼睛干，由自主就眨眼睛了。