这个手势模仿的是嘴巴的闭合。

This gesture mimes the closing of the mouth.

youdao

因其嘴巴的形状而得名的鸭嘴兽是世界上最古老的哺乳动物之一。

The platypus, also known as duckbill for the shape of its mouth, is one of the oldest animals in the world.

youdao

他嘴巴的骨头，连同其身体的其他部分，都涂上庄重的红色颜料。

The mouth bone, along with the rest of the body, was coated in a sacred red pigment.

youdao

To disfigure the mouth -- this is how I would interpret it -- to disfigure the mouth has a primary effect in rendering one at least temporarily speechless.

把嘴巴丑化--这就是我所理解的-,丑化自己的嘴巴使自己暂时不能说话,它是有十分重要影响的。

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