| 单词 | pit-gauge | 
| 释义 | > as lemmaspit-gauge   pit-gauge  n. now rare a gauge, sunk into the ground, for measuring rainfall. ΚΠ 1902    Encycl. Brit. XXX. 701/2  				Professor Joseph Henry, about 1850, recommended to the observers of the Smithsonian Institution the use of the ‘pit-gauge’. < as lemmas  | 
	
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