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1·There are significant variations in pitch accent between dialects.

不同方言之间的音高差异很大。

2·Everyone has a different voice, accent and pitch, said Och.

“每个人都有不同的语音，腔调和声调，”Och说。

3·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。

4·Perhaps they have a lisp, or they have a peculiar accent or pitch of voice.

可能是他们的口齿不清，或者是独特的口音或语调。