Moho boundary

例句：

1. 1. The Moho boundary is a geological feature that separates the crust from the mantle.
   莫霍界线是一个地质特征，将地壳与地幔分隔开来。
2. 2. The discovery of the Moho boundary has revolutionized our understanding of the Earth's interior.
   发现莫霍界线的发现已经彻底改变了我们对地球内部的理解。
3. 3. The Moho boundary is a critical boundary in plate tectonics, separating continental and oceanic plates.
   莫霍界线是板块构造学中的一个关键边界，将大陆板块和海洋板块分隔开来。