rift valley

US 
UK 
  • n.地堑;裂谷
  • Web东非大裂谷;裂谷省;裂谷区
Plural Form:rift valleys  
Rift valley
n.
1.
地堑;裂谷a valley with steep sides formed when two parallel cracks develop in the earth's surface and the land between them sinks

Sample Sentence

Definition:
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