这种新型钻头可以轻松穿透硬质岩石。

The new drill bit achieves deep ___penetration into hard rocks with ease.

他对心理学理论的深刻理解让教授们印象深刻。

His remarkable ___penetration of psychological theories impressed the professors.

我们的新产品在本季度实现了35%的市场渗透率。

Our new product achieved a 35% ___penetration rate in the market this quarter.

这种防晒霜能减少紫外线对皮肤的穿透深度。

This sunscreen reduces the ___penetration of UV rays into the skin.