disguise

她无法掩饰她的失望。

She couldn't ___disguise her disappointment.

他试图用微笑掩饰他的愤怒。

He tried to ___disguise his anger with a smile.

好的粉底液可以遮盖细微的皮肤瑕疵。

A good foundation can ___disguise minor skin blemishes.