1·The methods of getting ravine density is complex currently, because this factor is multitudinous in the process of gaining ravine density, this is a hindrance to further spatial analysis.
对于沟壑密度的提取方法目前较为复杂，这主要由于在提取过程中所涉及到的因子数目众多，为进一步的空间分析研究设置了障碍。
2·Ravine density, which is an important factor indicating the extent of the fragmentation of the Earth surface, plays a significant role in the research of soil erosion and landform evolution, etc.
沟壑密度是反映地表破碎程度的重要因子，在土壤侵蚀、地貌演变等研究中有重要作用。
3·He is also the author of Deep Within the Ravine (1984) and Like Wings (1978).
舒尔茨早期的诗作有《沟壑深处》（1984）与《像翅膀》（1978）。
1·When the human enters into the ravine, and sees gurgling the rivulet murmur, the adverse current on, and not far away cloud steams the fog to circle, suddenly thick suddenly pale.
人入山沟，但见淙淙细流潺潺而出，逆流而上，不远处云蒸雾绕，忽浓忽淡。
2·Located On Ravine Lot in Prestigious Joshua Creek.
位于山沟地段在着名的约书亚河。