yǔ yīn xué / kè / shàng / lǎo shī / shì fàn / le / hóu sè yīn / de / fā yīn / fāng fǎ

语音学课上，老师示范了喉塞音的发音方法。

In the phonetics class, the teacher demonstrated how to pronounce a glottal stop.