the length of time

• 时长

the length of time的用法和样例：

例句

1. There are no obvious relationship between weakening of the glottal stop and the length of the tone.
   喉塞尾弱化程度与入声时长无明显关系。
2. As one of the leading prosodic features, the accent indicates an ascendence of the phonetic pitch and a lengthening of the temporal length.
   重音是最主要的韵律特征之一，重音在声学上主要表现为音高的升高和时长的延长。