valleys

n.a long depression in the surface of the land that usually contains a river

同义词：vale

Intermountain valleys and lower mountain slopes
Mountains versus valleys: Semiannual variation of geomagnetic activity
Subsurface Valleys and Geoarcheology of the Eastern Sahara Revealed by Shuttle Radar
Outcomes : Cluster Formation in the New Silicon Valleys
The two-dimensional resonance of sediment-filled valleys
Breakup of Temperature Inversions in Deep Mountain Valleys: Part I. Observations.
Evidence for Precipitation on Mars from Dendritic Valleys in the Valles Marineris Area
Respiratory Hospital Admissions Associated with PM10 Pollution in Utah, Salt Lake, and Cache Valleys
Effect of Temperature on Culex tarsalis (Diptera: Culicidae) from the Coachella and San Joaquin Valleys of California
SOME ASPECTS OF THE CIRCULATION DURING THE PERIODS OF THE PERSISTFNT DROUGHT AND FLOOD IN YANTZE AND HWAI-HO VALLEYS IN SUMMER