You know them when they're occluded. You know them in the dark.

当有东西挡路的时候你会知道， 即便是在黑暗中。

This, coupled with thick tenacious secretions and crusts, may completely occlude the airway.

再加上厚厚的分泌物和伪膜，可能会完全堵塞气道。

Even parts, that are completely missing from our images or things that are occluded!

甚至连带图中缺失和封闭起来的部分！

And this can occlude normal blood flow.

这会阻滞正常血流。

Well, a heart attack is anything that occludes the vessel that feeds the heart.

嗯，心脏病发作是指任何东西阻塞了供给心脏的血管。

It can also knock stuff over, and occlude your vision, and droop into your flasks.

它还会把东西打翻， 挡住你的视线， 掉进你的烧瓶里。

Not only closer to the stars, but bypassing the atmosphere that occludes our terrestrial instruments.

不仅离星星更近，而且绕过了遮挡我们地面仪器的大气层。

The most common pre-hepatic cause is portal vein obstruction, like when there's a thrombus occluding the portal vein and blocking blood flow.

最常见的肝前型病因是门静脉阻塞，例如当有栓子阻塞门静脉血流时。

If left untreated, however, the full thickness of the region of myocardium supplied by the occluded vessel may die.

然而，如若不治疗，堵塞血管供血的心肌区域全厚层将死亡。

They occlude long jump triple jump, high jump people, pole vault, short-put, discus and javelin, to name just a few.

他们排除了跳远三级跳远，跳高人，撑杆跳，短推，铁饼和标枪，仅举几例。