PHRASAL VERB (地势)走低,降低 If land or ground drops away, it slopes down so that it is at a lower level to where you are or from a particular point that has been mentioned. (地势)走低,降低
To the south the hills dropped away to farmland. [VERBPREP. prep.]
山势在南边一路下倾延伸至农田。
From the house, the garden drops away, surrounded by a rural scene of woodland. [VERBPREP.]