gneiss
noun [ U ] geology specialized uk/naɪs/ us/naɪs/
片麻岩（由长石﹑石英组成﹐中粗粒变晶结构和片麻状或条带状构造的变质岩）
a type of metamorphic rock that contains light and dark layers formed of minerals such as quartz and mica
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。