这个手势模仿的是嘴巴的闭合。

This gesture mimes the closing of the mouth.

youdao

模仿，仿效非常逼真的模拟或模仿，尤指谈吐、表情和手势；仿效。

To copy or imitate closely, especially in speech, expression, and gesture; ape.

youdao

模仿，仿效非常逼真的模拟或模仿，尤指谈吐、表情和手势；仿效。

To copy or imitate closely, especially in speech, expression, and gesture; ape.

youdao