"dense as lead"
"so dense he never understands anything I say to him"
"never met anyone quite so dim"
"although dull at classical learning, at mathematics he was uncommonly quick"
"dumb officials make some really dumb decisions"
"he was either normally stupid or being deliberately obtuse"
"worked with the slow students"
It pervades all bodies, dense as well as rare.
出自： R. J. Sullivan
A dense fog, when it seemed as if a tangible white darkness shut you in.
出自： H. Keller
Seawater that has lost its heat in melting icebergs is very dense and plunges to the very bottom of the ocean.
出自： F. Hoyle
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