| 单词 | rain dust | 
| 释义 | > as lemmasrain dust   rain dust  n. particulate matter falling from the air like or in rain; (also) a mist or mizzling rain. ΚΠ 1851    M. F. Maury Explan. & Sailing Direct. 154  				The ‘rain-dust’ has been observed most frequently to fall in spring and autumn. 1912    J. Galsworthy Inn of Tranquility 48  				The mist had thickened to a white, infinitesimal rain-dust. 2001    Jrnl. Environm. Radioactivity 55 109 		(abstract)	  				Cesium-137 still remained 14 years after the Chernobyl accident, reaching 26.6 Bq kg−1 in the coloured rain dust. < as lemmas | 
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