All are slowly moving because the plates float on a denser semi-liquid mantle, the layer between the crust and Earth's core.

所有板块都在缓慢移动，因为它们漂浮在密度更大的半液态地幔上，也就是地壳和地核之间的那一层。

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All are slowly moving because the plates float on a denser sem-iliquid mantle, the layer between the crust and Earth's core.

所有板块都在缓慢移动，因为它们漂浮在密度更大的半流体地幔上，也就是地壳和地核之间的那一层。

youdao

The answer may be that virtually all the water on Mars is now locked in the permafrost layer under the surface, with more contained in the planet's polar caps.

答案可能是，现在火星上几乎所有的水都被锁在地表下的永久冻土层中，更多的水被包含在这个星球的极地冰帽中。

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You load the software on all the PCs on your network and Network Magic automatically creates a management layer that bridges the interoperability gaps between disparate network devices.

ENGADGET: The Family is the Network: Pure Networks' Network Magic wants to make things simple

Part of what will be required is a common underlying software layer that runs on all electronic devices.

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The whole house had a layer of fine dust that had settled on all the surfaces.

CNN: E-mail from an inferno: Taking back our house