宽广的山谷,平底河谷
Strath \Strath\, n. [Gael. srath.] A valley of considerable size, through which a river runs; a valley bottom; -- often used in composition with the name of the river; as, Strath Spey, Strathdon, Strathmore. [Scot.] The long green strath of Napa valley. --R. L. Stevenson.