黑色面罩遮盖了她大部分面部。

The black ___mask covers most of her face.

在拥挤的地铁上，他戴了口罩以防感染病毒。

He wore a ___mask on the crowded subway to avoid catching the virus.

她用幽默来掩饰自己的紧张。

She used humor to ___mask her nervousness.

她每周都会敷一次面膜来保养皮肤。

She uses a facial ___mask once a week to take care of her skin.