1·That Professor is engaged himself in giving itinerate speech.
那位教授在全国作巡回讲座。
2·From this and the physiology that cause adjusts information to feedback to leave grave head again, make a whole itinerate communication system.
由此而引起的生理调整信息又反馈到下丘脑，构成一套完整的巡回通讯系统。