noun ダウンロード 🔗共有 片岩 Any of a variety of coarse-grained crystalline metamorphic rocks with a foliated structure that allows easy division into slabs or slates. Examples : "The hiker noticed the shiny, layered schists on the mountainside, easily splitting into thin, flat pieces. " ハイカーは、薄くて平らな破片に容易に割れる、山腹の光沢のある層状の片岩に気づいた。 geology material AIとチャット語彙ゲーム読解練習