Through the medium of the Syrians Greek culture penetrated Persia.

通过叙利亚人作媒介，希腊文化渗透到波斯。

The knife had penetrated his chest.

刀子刺入了他的胸膛。

They had penetrated airport security.

他们已打入机场保安组织。

The flashlights barely penetrated the gloom.

手电筒勉强照见那幽暗处。

The party has been penetrated by extremists.

极端分子已经打入了这个党。