1. 描绘：然而,在运用这些技术前之可行性评估(Feasibility1.污染源区域之描绘(delineation)与特徵调查当DNAPL在地下传输时,由於其复杂的空间流布,而造成污染源定位与描绘的困难度.

2. 描述：15. ascertainable 可以确定的/确切的 | 16. delineation 描述 | 17. exactitude 精确

3. 划定：delegation 转委(职能转授(权力) | delineation 划定 | delineation of constituencies 选区划界

4. 轮廓：delineate 描述 | delineation 轮廓 | delineationdrilling 探边钻井

noun

1. representation by drawing or painting etc

Synonym: depictionportrayal

2. a drawing of the outlines of forms or objects

Synonym: depictionlimningline drawing

3. a graphic or vivid verbal description

e.g. too often the narrative was interrupted by long word pictures
the author gives a depressing picture of life in Poland
the pamphlet contained brief characterizations of famous Vermonters

Synonym: word pictureword-paintingdepictionpicturecharacterizationcharacterisation