A piece of pumice; = pumice, n. 1b.
| 单词 | θ5738 | 
| 释义 | the world > the earth > structure of the earth > constituent materials > rock > igneous rock > 			[noun]		 > volcanic rocks > lava > pumice > piece of (2)		 pumice stonea1425 A piece of pumice; = pumice, n. 1b. pumice1480 As a count noun: a piece of this substance, esp. as used as an abrasive; = pumice stone, n. 1. | 
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