the asthenosphere
noun [ S ] environment specialized uk/æsˈθiː.nə.sfɪər/ us/æsˈθiː.nə.sfɪr/
软流圈
the thin, almost liquid, layer under the hard rock that forms the outer layer of the earth
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。