ridge
noun [ C ] uk/rɪdʒ/ us/rɪdʒ/
脊;垄;（尤指）山脊
a long, narrow raised part of a surface, especially a high edge along a mountain
We walked along the narrow mountain ridge. 我们沿着狭窄的山脊行进。
figurative A ridge (= a narrow area) of high pressure will bring good weather this afternoon. 今天下午高压脊将会带来好天气。
屋脊
the part of a roof where the sloping sides join at the top
Idiom
have been around the ridgesidiom Australian English 有丰富的经验
If you have been around the ridges, you have a lot of experience.