mask must be worn发音

意思翻译

必须佩戴口罩

相似词语短语

be must───必须

be worn out───（物）破旧；疲惫不堪；用坏了的

must be happy───一定很开心

be must for───必须

it must be───它必须是；一定是

must be the───一定是

must be nice───一定很好

that must be───那一定是

must be that───一定是那个

双语使用场景

she added: "A mask can be worn continuously for up to eight to 10 hours, but must be replaced if it is taken off at any stage.───她补充说：“一只口罩持续佩戴可以达8-10个小时，但是期间一旦摘下就必须更换。”

gas mask must be worn───必须戴防毒面具——

英语使用场景