每日雅思詞匯：高頻動詞

　　激發，鼓勵encourage = motivate = stimulate = spur

　　認為think = assert = hold = claim = argue

　　完成complete = fulfill = accomplish= achieve

　　保留keep = preserve = retain = hold

　　有害于destroy = impair = undermine = jeopardize

　　減輕 ease = alleviate = relieve = lighten