upper-level ridge是什么意思，upper-level ridge的翻译，upper-level ridge音标、读音、用法和例句

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upper-level ridge是什么意思，upper-level ridge的翻译，upper-level ridge音标、读音、用法和例句_伍贰汉英词典

upper-level ridge

基本解释

专业释义

地球科學