空: empty, air, sky, in vain...
学分: course credit...
占用: to occupy...
修车: to repair a bike (car etc)...
照: according to, in accordance with, to shine, to illuminate, to reflect, to look at (one's reflection), to take (a photo), photo, as requested, as before...
老乡: fellow townsman, fellow villager, sb from the same hometown...
惯性: (physics) inertia, force of habit, tendency to do things in the accustomed way, habitual...
