形容詞 dense:

1. permitting little if any light to pass through because of denseness of matter
   同義詞：heavy, impenetrable
2. having component parts closely crowded together
   同義詞：compact, thick
3. hard to pass through because of dense growth
   同義詞：thick
4. having high relative density or specific gravity
5. slow to learn or understand; lacking intellectual acuity
   同義詞：dim, dull, dumb, obtuse, slow

1. Dense fog is covering roads in the north and visibility is very poor.
   濃霧籠罩了北部的公路，能見度很低。
2. A dense mass of black hair framed his face.
   濃密的黑發(fā)襯托著他的面龐。
3. Traffic was interrupted by a dense fog.
   交通因濃霧而受阻。
4. They hewed their way through the dense jungle.
   他們?cè)跐饷艿膮擦掷镩_辟出一條路來。
5. I can't see anything in this dense mist.
   這樣的濃霧里，我什么也看不見。
6. One or two of the students in my class are a bit dense.
   我班上有一兩個(gè)學(xué)生有點(diǎn)遲鈍。

dense

adj.（形容詞）
dens.er,dens.est

Having relatively high density.
稠密的：有相對(duì)較高的密度的
Crowded closely together; compact:
密集的：十分擁擠的；緊密的：
例句：
a dense population.
稠密的人口

Hard to penetrate; thick:
濃密的：難以穿透的；濃厚的：
例句：
a dense jungle.
濃密的叢林

Permitting little light to pass through, because of compactness of matter:
不透光的：由于物質(zhì)致密而幾乎不允許光透過：
例句：
dense glass; a dense fog.
毛玻璃；濃霧

Opaque, with good contrast between light and dark areas. Used of a photographic negative.
反差強(qiáng)的：不透明的，在黑白區(qū)域之間有很好反差的。常用于照相底片
Difficult to understand because of complexity or obscurity:
晦澀難懂的：因?yàn)閺?fù)雜或含糊而難以理解的：
例句：
a dense novel.
一篇晦澀難懂的小說

Slow to apprehend; thickheaded.See Synonyms at stupid
笨的：理解力慢的；笨腦瓜的參見 stupid

來源：
Latin dônsus
拉丁語 dônsus

【引伸】
dense.ly
adv.（副詞）
dense.ness
n.（名詞）