Taivo A Taiwan Mandarin dictionary

軟流層

ruǎnliúcéng

ㄖㄨㄢˇ ㄌㄧㄡˊ ㄘㄥˊ

Simplified 软流层

  1. 1(geology) asthenosphere

Keep 軟流層 and it comes back until you know it.

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