讲座: a course of lectures...
站住: to stand...
效益: benefit, effectiveness, efficiency...
释放: to release, to set free, to liberate (a prisoner), to discharge...
押金: deposit, down payment...
宣称: to assert, to claim...
服务: to serve, service...
状元: top scorer in the palace examination (highest rank of the Imperial examination system), see, the most brilliantly talented person in the field, leading light...
输血: to transfuse blood, to give aid and support...
免: excuse/free sb from sth; exempt; dispense with...
