Free from, clear of, smoke. smokeless zone, a district in which the creation of smoke is forbidden by law.
| 单词 | θ61474 |
| 释义 | the world > physical sensation > cleanness and dirtiness > freedom from impurities > removal of impurities > [noun] > pollution control > smokeless zone (1) smokeless zone1953 Free from, clear of, smoke. smokeless zone, a district in which the creation of smoke is forbidden by law. |
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