这座山脉主要由火山活动形成的火成岩构成。

This mountain range is mainly composed of igneous rocks formed by volcanic activity.

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This mountain range is mainly composed of igneous rocks formed by volcanic activity.

igneous 来自拉丁语 ignis(火),后缀 -eous 表示"由...构成的"。这个词字面意思是"由火构成的",在岩石学中特指"火成岩",即由岩浆冷却凝固形成的岩石。

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