He was driven out of a side entrance with his hand covering his face.

他被从边门赶了出来，一只手还捂着脸。

《柯林斯英汉双解大词典》

This kind of smile is done with the head turned downward and facing away while the eyes look upward, often with part of the hand covering the mouth.

有一种笑是低着头转过去但是眼睛看着上面，经常用一只手捂住嘴。

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Other controls include turning over the soil, pulling the weeds by hand or covering them with mulch made from wood, garden waste or other material.

VOA: special.2009.05.26

As his mother testified, Beasley slumped forward, his chin on his chest and his right hand covering his eyes.

NPR: Mother Testifies To Spare Son's Life In Ohio Case

Peyton Siva sat a few feet away, a hand covering his mouth.

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Compressed lips, licking lips, hand covering mouth and rubbing upper lip.

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