trail off片语动词KK [trel ɔf] /tɹeɪl ɔf/发音片语动词1渐渐变小、越说越轻、说不下去Her voice trailed off as she realized nobody was listening.她发现没人在听,声音就越说越轻,最后停了下来。2逐渐减少、慢慢减弱、日渐稀少Ticket sales trailed off after the first few weeks.开演头几周之后,票房就逐渐下滑了。用这个字练口说→