Many carnivorous plants secrete enzymes to penetrate the hard exoskeleton of insects, so they can absorb nutrients from inside their prey.

许多食肉植物分泌酶以穿透昆虫坚硬的外骨骼，以从猎物体内吸收营养。

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There have been around 15 attempts from outside Idaho to penetrate the market.

已有约十五次从爱达荷州以外打入该市场的企图。

《柯林斯英汉双解大词典》

The CIA had requested our help to penetrate a drug ring operating out of Munich.

中情局曾要求我们协助打入在慕尼黑外活动的一个贩毒团伙。

《柯林斯英汉双解大词典》

"This needle is still sharp enough to penetrate through body tissue.

VOA: special.2010.02.10

So what is actually going to matter is how closely that electron can penetrate to the nucleus, and what I mean by penetrate to the nucleus is is there probability density a decent amount that's very close to the nucleus.

所以实际上有关系的是,电子可以穿越至原子核有多近,我所指的穿越至原子核是,这里有一定数量的概率密度,可以距离原子核非常近。

麻省理工公开课 - 化学原理课程节选

So, the size still for an s orbital is larger than for a d orbital, but what we say is that an s electron can actually penetrate closer to the nucleus.

轨道的尺寸比,ｐ轨道还是要大，但我们说的是ｓ轨道可以,穿透到更接近原子核的地方。

麻省理工公开课 - 化学原理课程节选

Radiations reaching the atmosphere as sunshine can penetrate to the surface of the earth.

FORBES: A Call to Arms on Climate Change

The first version had a back made of metal, which hampered the ability of wireless signals to penetrate to the antenna inside, engineers said.

WSJ: Apple Knew of iPhone Antenna Risks

Yet for all Chelsea's lack of urgency up front they remained solid at the back and the hosts could not penetrate to create any real chances.

BBC: Bordeaux 1-1 Chelsea