去掉: to get rid of, to exclude, to eliminate, to remove, to delete, to strip out, to extract...
分化: to split apart, differentiation...
领土: territory...
分支: branch (of company, river etc), to branch, to diverge, to ramify, to subdivide...
凹: a depression, indentation, concave, hollow...
轿车: enclosed carriage for carrying passengers, motor carriage, car or bus, limousine...
因素: element, factor...
充实: rich, full, substantial, to enrich, to augment, to substantiate (an argument)...
反映: to mirror, to reflect, mirror image, reflection, to report, to make known, to render...
课程: course, academic program...