倍: (two, three etc) -fold, times (multiplier), double, to increase or multiply...
维修: maintenance (of equipment), to protect and maintain...
功课: homework, assignment, task, classwork, lesson, study...
了解: to understand, to realize, to find out...
激动: to move emotionally, to stir up (emotions), to excite...
原则: principle, doctrine...
主动: passive, drive (of gears and shafts etc)...
移民: to immigrate, to migrate, emigrant, immigrant...
汇合: confluence, to converge, to join, to fuse, fusion...
要求: to request, to require, requirement, to stake a claim, to ask, to demand...
