| 词汇 | foam |
| 词根词缀 | 词源： foam (n.) O.E. fam "foam, saliva froth," from W.Gmc. *faima (cf. O.H.G. veim, Ger. Feim), from PIE *poim(n)o- (cf. Skt. phenah; L. pumex "pumice," spuma "foam;" O.C.S. pena "foam;" Lith. spaine "a streak of foam"). The verb is from O.E. famgian "to foam." The rubber or plastic variety so called from 1937. 词根记忆： v. /n.泡沫,起泡沫The beer foamed over onto the table.啤酒起泡溢流在桌上. |
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