tā / zài / zhé xué / kè / shàng / jiǎng jiě / le / ào kǎ mǔ tì dāo / de / jī běn / yuán lǐ他在哲学课上讲解了奥卡姆剃刀的基本原理。He explained the basic principles of Occam's razor in his philosophy class.