In our teaching practice, we often observe that, due to the lack of prerequisites and limited mastery of a language, foreign students face difficulties in understanding course contents. This especially burdens students from Eastern and South-Eastern Asia, because of the distance between their native languages and the instructional language (French in our case). We propose a quick and costeffective method for making educational content accessible in the native tongues of the students, through a contributive computer-assisted multilingualization by voluntary participants. The process consists in post-editing MT (Machine Translation) pre-translations via an interactive multilingual access gateway (iMAG), which displays a web page in a selected language. Since 2012, several students have validated the approach by producing in Chinese more than 500 pages (125 K words) of French undergraduate and graduate course material about computer science, at a rate of about 10 min (total time) per standard page. This multilingual resource is freely accessible on the MACAU-Chamilo platform.