| 单词 | air grating |
| 释义 | > as lemmasair grating air grating n. a grating or perforated plate for the entrance of air under floors, etc. ΚΠ 1817 Ann. Philos. 9 487 The top and bottom are each composed of one horizontal and one upright air grating. 1873 Times 4 Feb. 11/2 The air grating was shown me through which the hot air was supposed to come in, but whenever I touched this I always found it cold. 1940 Jrnl. Hygiene 40 132 Experiments showing the effect of an air grating on the rate of air change in the two blocks of flats. 1990 Seattle Times (Nexis) 2 Mar. c1 In the past, they have hidden in the small attic and watched through an air grating, then swooped down like Superman. < as lemmas |
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