The gunman, whose mask had slipped, fled.

面罩掉落的持枪歹徒逃之夭夭了。

...actors wearing masks.

戴面具的演员们

You must wear goggles and a mask that will protect you against the fumes.

为了免受烟雾危害，你必须戴上护目镜和面罩。

She wore a surgical mask and rubber gloves while she worked with the samples.

她处理样品的时候戴着手术口罩和橡胶手套。

His mask of detachment cracked, and she saw for an instant an angry and violent man. [+ of]

他冷静超然的伪装破碎了，一瞬间她的面前出现了一个愤怒而又狂暴的男人。

This mask leaves your complexion feeling soft and supple.

这种面膜能使你的皮肤变得柔软细嫩。

Dena lit a cigarette, trying to mask her agitation. [VERB noun]

德娜点燃了一根烟，试图掩饰不安。

A thick grey cloud masked the sun. [VERB noun]

一片厚厚的乌云遮住了太阳。

Too much salt masks the true flavour of the food. [VERB noun]

太多的盐会盖住食物本来的味道。

The healthy trade figures mask a much gloomier picture. [VERB noun]

繁荣的贸易数据背后掩盖着贸易极不景气的真相。