The leak could come from a poor fit between the mask and the user's face, or from a crack or hole somewhere on the mask.

漏气可能是由于穿戴着脸部和面具大小不合适，或者面具上有裂缝或漏洞。

youdao

A small undesired hole in an oxide opaque region of a mask or reticle or in a photoresist layer.

氧化物、掩模或标线的不透明区域，或光刻层中不需要的小孔。

youdao

Water gushed through the hole, so Sherman wore a snorkeling mask.

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And then there's the Ostrich Pillow, a bean-filled mask that covers your entire head but has a hole for your nose and mouth so you can breathe.

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