iterative nature迭: alternate; change丛: crowd together质: nature; character; essence迭挫强敌: inflict repeated reverses on a formidable enemy迭次求和: repeated summation下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:迭丛质,即可在微信中查询翻译