| 单词 | upper mantle |
| 释义 | upper mantle (once / 1477414 pages) n WORD FAMILY upper mantle USAGE EXAMPLESThe researchers believe the “great valley” formed as Mercury’s interior cooled, which caused the planet’s crust and upper mantle to contract and bend. New York Times(Nov 21, 2016) For instance, whether the upper mantle’s capacity to consume O2 evolved or not is still debated. Nature(Nov 01, 2016) All of the Earth’s continents float on tectonic plates, which glide slowly over a plastic-like layer of the upper mantle. National Geographic(Sep 26, 2016) n the upper part of the mantle Hyper layer a relatively thin sheetlike expanse or region lying over or under another |
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