英文原文：

climb mountains.

mountain climbing

英式音标：

[klaɪm] [ˈmaʊntns] .

[ˈmaʊntɪn] [ˈklaɪmɪŋ]

美式音标：

[klaɪm] [ˈmaʊntns] .

[ˈmaʊntn] [ˈklaɪmɪŋ]