Xīn / lǐ / xué / kè / shàng / lǎo / shī / jiè / shào / le / Fú / léi / yī / dé / tí / chū / de / gāng / yù / qī

心理学课上，老师介绍了弗洛伊德提出的肛欲期。

In psychology class, the teacher introduced Freud's concept of the anal stage.