词根词缀：curr-, cur-, cor-, cour-

【来源及含义】Latin: to run, running

【同源单词】coarse, concoarse, concourse, concur, concurrence, concurrent

词根词缀：re-, red-

【来源及含义】Latin: back, backward, again; used as a prefix

【同源单词】recalcitrant, recant, recapitulate, recapitulation, recede, receipt