asthenosphere

名词 n.
/asˈθɛnə(ʊ)sfɪə/   

英文释义

名词 n.
  1. A portion of the Earth's upper mantle, below the lithosphere.
    — Holonyms: upper mantle, outer mantle < mantle < Earth

词形变化

词源

Etymology tree
English astheno-
Ancient Greek σφαῖρᾰ (sphaîră)bor.
Latin sphaera
Late Latin sphērader.
Old French spherebor.
Middle English spere
English sphere
English -sphere
English asthenosphere
From astheno- + -sphere.
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