英语词汇expectoration的发音释义、词根词缀、结构分析、同源词、词频及词根记忆法-英语词根词缀词典

词汇	expectoration
词根词缀	Online Etymology Dictionary expectoration n. 1670s, noun of action from expectorate.
随便看	redskin redstart red-streak redtail red tape reduce reducible reductio ad absurdum reduction reductionism reductionist reductive reductor redundance redundancy redundant reduplicate reduplication redux redware redwood redyl- reebok re-echo reed

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