湿: moist, wet...
瓶颈: neck of a bottle, bottleneck, problem that impedes progress...
人均: per capita...
请客: to give a dinner party, to entertain guests, to invite to dinner...
节水: to save water...
划分: to divide up, to partition, to differentiate...
检测: to detect, to test, detection, sensing...
要素: essential factor, key constituent...
相应: to correspond, answering (one another), to agree (among the part), corresponding, relevant, appropriate, (modify) accordingly...
建立: to establish, to set up, to found...
