n. a covering to disguise or conceal the face
n. activity that tries to conceal something
n. a protective covering worn over the face
v. put a mask on or cover with a mask
n. 面具, 假面具, 掩饰, 石膏面模
vt. 戴面具, 掩饰, 使模糊
vi. 化装, 戴面具, 掩饰, 参加化装舞会
[计] 屏蔽; 掩码
1. He wore a mask to protect himself from the dust.
他戴上口罩以保护自己免受灰尘的影响。
2. During the party, everyone had to wear a mask for fun.
在聚会上，每个人都必须戴上面具来增加乐趣。
3. The doctor advised her to wear a mask in crowded places.
医生建议她在拥挤的地方戴上口罩。