单词学习：mask 名词/动词
mask
/mɑːsk/ (英式) /mæsk/ (美式)
n. 面具；口罩；掩饰；伪装；面膜 v. 掩饰；掩盖；戴面具；遮蔽
Mr. Gu wore a mask to protect himself from the dust while cleaning the old books.
顾老师在清理旧书时戴上了口罩以防灰尘。
单词卡片
卡片已就绪
