词根词缀:echo-, ech-
【来源及含义】Greek: sound, noise; especially a returned sound; repetition, imitation
【同源单词】anecho, anechoic, catecheses, catechesis, catechetical, catechism
词根词缀:-ical
【来源及含义】Latin: from -icalis, a suffix that forms adjectives from nouns; of or having to do with; having the nature of; constituting or being; containing or made up of; made by or caused by; like, characteristic of; art or system of thought; chemical terms
【同源单词】abdominovesical, abiological, ableptical, academical, acarological, acarologically