沟壕

1.
ditch
沟_百度百科 ... 沟灌[ furrow irrigation] 沟壕[ ditch] 沟壑[ ravine;gully] ...
baike.baidu.com|Based on 11 pages
2.
Moat
...是正方形,但城堡(Castle)是圆形,城墙外头有沟壕(Moat),现已没有水,长满了修整的绿草。
www.trends.com.cn|Based on 4 pages
3.
trenches
...(depressions)、脊背(ridges)、沟壕(trenches)、小丘(blisters)和环形坑(craters)等形状的表面形貌特征.
danci.911cha.com|Based on 4 pages

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard