asthenosphere

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。

As the plates spread apart, the lithosphere, or crust, is moved aside like a lid, allowing molten rock from the liquid asthenosphere to seep through..板块分离时，岩石圈或地壳象盖子般移到一旁，液态软流层中的熔岩渗溢而出。

Seamounts form from magmatic eruptions, which occur when lava seeps up to the crust through the partially-melted sub-layer, known as the asthenosphere, in the mantle..火山岩透过地幔中部份熔融的软流层渗入到地壳，岩浆喷发，海山由此形成。