zài / zhé / xué / kè / shàng / lǎo / shī / jiè / shào / le / Xiū / mó / de / jīng / yàn / zhǔ / yì / sī / xiǎng在哲学课上,老师介绍了休谟的经验主义思想。In philosophy class, the teacher introduced Hume's empiricist ideas.