irrigate
/ˈɪrɪgeɪt; `ɪrəˌɡet/ v[Tn]
1 supply (land or crops) with water (by means of streams, reservoirs, channels, pipes, etc) 灌溉（田地或作物）
irrigate desert areas to make them fertile 灌溉荒芜地区使之肥沃.
2 (medical 医) wash (a wound, etc) with a constant flow of liquid 冲洗（伤口等）.