控制: control, to exercise control over, to contain...
明明: obviously, plainly, undoubtedly, definitely...
职业: occupation, profession, vocation, professional...
限于: to be limited to, to be confined to...
反面: reverse side, backside, the other side (of a problem etc), negative, bad...
好坏: good or bad, good and bad, standard, quality...
坏事: bad thing, misdeed, to ruin things...
小心: to be careful, to take care...
起步: to set out, to set in motion, the start (of some activity)...
工艺: arts and crafts, industrial arts...