ctusfi lujvo

x₁ is a class (instructional session) on topic x₂ taught by x₃ to audience x₄

Refers to a single event, e.g. "I have a class at 3:30." For a course of instruction, see ctusfimei.

jbovlaste

In notes:

ctusfimei: x₁ is a course (series of lessons) on subject x₂, taught by x₃ to audience x₄