求翻译：4、路基、路面排水工程：高填挖地段的防护工程以及路基加固工程：这一部分相当重要，对于路基排水，采用了边沟、截水沟、急流槽等排水设施；对于路面排水，出了对路面进行了路拱设计，还进行了中央分隔带的排水设计：对于特殊地段的防护和加固主要采用了骨架内植草和挡土墙是什么意思？

4, roadbed, road drainage works: lots of high-filled excavation and embankment strengthening works protective works: This section is very important, for subgrade drainage, using ditches, drainage ditches, drainage facilities, such as jet slot; for road drainage, a road humps on the road for the desi

4, roadbed, road drainage works: High-reclamation dug lots of roadbed reinforcement works as well as protective works: This is quite important, part of a roadbed for drainage, using the side ditch, gutters, Chase rapids tanks, and other drainage facilities; the road to the road surface drainage, out

4th, roadbed, surface drainage project: Gao Tianwa land sector protection project as well as roadbed reinforcement project: This part quite important, regarding the subgrade drainage, has used draining water facilities and so on the side ditch, catch drain, anxious launder; Regarding the surface dra

4, and subgrade, and pavement drainage engineering: high filled dug lots of protection engineering and subgrade reinforcement engineering: this part quite important, for subgrade drainage, used has gutter, and cut ditch, and Rapids slot, drainage facilities; for pavement drainage, out has on pavemen

4, and subgrade, and pavement drainage engineering: high filled dug lots of protection engineering and subgrade reinforcement engineering: this part quite important, for subgrade drainage, used has gutter, and cut ditch, and Rapids slot, drainage facilities; for pavement drainage, out has on pavemen