noun🔗Share软流层，无力圈。 The zone of the Earth's upper mantle, below the lithosphere."The Earth's lithosphere, which includes the crust and upper mantle, floats on the softer, more pliable asthenosphere. "地球的岩石圈，包括地壳和上地幔的一部分，漂浮在更软、更易弯曲的**软流层（又称无力圈）**之上。geologygeographyscienceChat with AIVocabulary GamePractice Reading
