irrigate /ˈiriɡeit/ vt. 1. 灌溉：They have built canals to irrigate the desert.他们建造成水渠以灌溉沙漠。2.（医生）冲洗伤口：irrigate one's nose and throat with hot water用热水冲洗鼻喉

 irrigation /ˌiriˈɡeiʃən/ n.［u］灌溉：The area under irrigation totals 5,000,000 hectares. 灌溉面积总共是500万公顷。We often see irrigation canals on flat land. 我们常看见平地上有灌溉渠。