lǎoshī / zài / shíyànkè / shàng / yǎnshì / le / xiāosuānyín / yǔ / yánsuān / de / fǎnyìng

老师在实验课上演示了硝酸银与盐酸的反应。

The teacher demonstrated the reaction between silver nitrate and hydrochloric acid in the lab class.