delineation of soil

例句：

1. 1. The artist's delineation of the landscape is breathtaking.
   这位艺术家对风景的描绘令人叹为观止。
2. 2.The government's delineation of the boundaries between the two countries is crucial.
   政府对两国边界的界定至关重要。
3. 3. The scientist's delineation of the molecular structure of DNA was a major breakthrough in biology.
   科学家对DNA分子结构的描绘是生物学的一次重大突破。