zài / yǔ / yīn / xué / kè / shàng / lǎo / shī / jiǎng / jiě / le / bàn / mǔ / yīn / de / fā / yīn / tè / diǎn在语音学课上,老师讲解了半母音的发音特点。In phonetics class, the teacher explained the pronunciation features of semivowels.