口罩

In a sentence

• 我每天出门都会戴口罩。

  I wear a mask every day when I go out.

  Here, the word '口罩' refers to a health-related accessory worn for protection.

• 在化装舞会上，他戴了一副特别的口罩。

  At the masquerade party, he wore a special mask.

  In this context, '口罩' describes a decorative mask typically worn during masquerades.

• 工厂里的工人们都需要佩戴防护口罩。

  The workers in the factory need to wear protective masks.

  Here, '口罩' is used to refer to an occupational safety device to protect the wearer from environmental hazards.