penetrate
verb uk/ˈpen.ɪ.treɪt/ us/ˈpen.ə.treɪt/
(MOVE INTO)
[ I or T ]穿透；进入；渗入
to move into or through something
Amazingly, the bullet did not penetrate his brain. 令人惊讶的是，子弹并未射入他的脑部。
In a normal winter, the frost penetrates deeply enough to kill off insect eggs in the soil. 在正常的冬季里，霜会深深渗入土壤，足以杀死昆虫卵。
[ T ]成功进入（机构）成为其一部分
to succeed in becoming part of an organization, etc. and working within it
The organization had been penetrated by a spy. 该组织渗入了一名间谍。
The company has been successful in penetrating overseas markets this year (= it has started selling its products in them). 今年，该公司成功地打入了海外市场。
[ I or T ]到达;影响
to reach or affect something
These changes had not yet penetrated as far west as the mountains of Merioneth. 这些变化还没有影响到西边远处的麦里昂斯山。
[ T ]透过…看见;看透
If your eyes penetrate somewhere dark, you manage to see through it.
Our eyes couldn't penetrate the dark/the gloom of the inner cave. 洞内一片黑暗／昏暗，我们什么也看不见。
[ T ]（性交时）男性阴茎插入
When a man penetrates his partner during sex, he puts his penis into his or her body.
(UNDERSTAND)
[ I or T ]洞察，了解;深入研究
to study or investigate something in order to understand it
It's hard to penetrate her mind. 了解她的内心很难。
He penetrates deeper into the artist's life in the second volume of his autobiography. 他通过这位艺术家自传的第二卷对其生平作了更深入的探究。