A three-toned ring interrupted his thoughts. Jack answered the briefing room phone, listened for a moment, then slammed down the receiver.
一阵三音调的铃声打断了杰克的思绪，他拿起简报室内的电话听了一会儿，然后猛地把话筒砸在电话底座上。
2
According to the survey, all the ideas in the approach, such as the memory of phonetic symbols, sound rules, syllable judgement, Three-toned English(TTE)are all fit for College English teaching.