Meanings

one's fate (fortune) as concerns studies

studying for a test (esp. school or university entrance examinations)

leaving all your textbooks, etc., at school

diligent worker

hardworking

to gain knowledge

studying hard

not studying (for a test, etc.)

staying behind after school to do private study

learning about the world

cost of a lesson learned (e.g. from failing at something)

studying for a test

studying for a test

tiredness from (over-)studying

person who studies very hard (at school)