理智: reason, intellect, rationality, rational...
明天: tomorrow...
出难题: to raise a tough question...
地面: floor, ground, surface...
专利: patent, sth uniquely enjoyed (or possessed etc) by a certain group of people, monopoly...
炊烟: smoke from kitchen chimneys...
错觉: misconception, illusion, misperception...
减免: to reduce or waive (taxes, punishment, rent, tuition etc)...
扭: to turn, to twist, to wring, to sprain, to swing one's hips...
需: to require, to need, to want, necessity, need...
