asthenosphere [æs'θi:nɜ:ˌsfɪr]

例句:

• Maginal orogeny was formed on this condition with same relative motion trend between lithosphere and asthenosphere.
  板缘造山主要表现为岩石圈和软流圈以基本相同的运动趋势的相对运动.
  
• The mesosphere comprises the rest of the mantle below the asthenosphere.
  中间圈包括岩流圈以下地幔的其余部分.
  
• The asthenosphere corresponds approximately to the low - velocity zone.
  软流圈,大体上相当于低速带.