ditchn.沟渠;壕沟vt.丢弃;坠入沟中;飞机(在海上)迫降vi.挖渠;飞机紧急降落
ditch irrigation沟灌
ditching landing水上降落
ditch extraction水系提取
ditch water level沟水位
ditch surrounding基坑围护
ditching attitude水上迫降姿态
ditch planting way壕沟栽植法
Ditchburn rs sector狄其奔扇片轮
ditches at villages村镇沟渠
ditching probability击水概率