ground sill

• 床岩,地槛,槛木

ground sill的用法和样例：

例句

1. Chunks of the overlying rock may break off and become a part of a sill.
   上复岩石的碎块可能破裂并成为岩床的一部分。
2. When you see a termination of a sill you should ask yourself how the intruding magma behaved at the moment of intrusion.
   当你看到岩床终端时你应该自问，侵入的岩浆在侵入期是如何表现它们的特征的。