| 单词 | smog mask |
| 释义 | > as lemmassmog mask smog mask n. ΚΠ 1954 Ann. Reg. 1953 iv. 391 The year 1953 might well be remembered as the one in which ‘smog’ masks first appeared. 1979 Listener 5 July 6/1 Visiting journalists [to Tokyo]..were amazed to find they didn't have to wear smog-masks. < as lemmas |
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