A deep, narrow valley with steep, rocky sides.

• Usually carved by a river through rock over time.

两侧陡峭、狭长而深的山谷。

• 通常由河流长期侵蚀切割而成。

A street or area flanked by very tall buildings.

• Figurative use likening it to a natural canyon.

被高楼夹峙的街道或区域。

• 比喻用法，类似天然峡谷。