| 单词 | pollution-free |
| 释义 | > as lemmaspollution-free pollution-free adj. ΘΚΠ the world > physical sensation > cleanness and dirtiness > freedom from impurities > [adjective] > not making impure unpolluting1783 untainting1813 pollution-free1936 1936 Times 3 Apr. 12/3 The number of pollution-free rivers is negligible. 1991 J. Makower et al. Green Consumer Supermarket Guide ii. 85 Fish..is the least energy and resource-intensive, although it is far from pollution-free. < as lemmas |
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