File Urls
{"id":4831,"type":"document","url":"https://efl.easyedu.vn/sites/default/files/easyschool/upload/2025/09/day_20.pdf","width":null,"height":null,"thumbnail":"https://efl.easyedu.vn/sites/all/themes/easyedu/images/pdf-large.png"}
Lecture Type
Bài học
code
EST_LV3_T1_LS20
Subjects