发浑（指清漆）；
v.使变钝( dull的现在分词 )；使（兴趣、痛苦等）减少；使麻木；使晦暗
"Age had dulled the surface"
become dull or lusterless in appearance; lose shine or brightness"the varnished table top dulled with time"
deaden (a sound or noise), especially by wrapping同义词：mufflemutedampdampentone down
make numb or insensitive同义词：numbbenumbblunt
make dull or blunt"Too much cutting dulls the knife's edge"
同义词：blunt
become less interesting or attractive同义词：pall
make less lively or vigorous"Middle age dulled her appetite for travel"
adj.lacking in liveliness or animation"he was so dull at parties"; "a dull political campaign"; "a large dull impassive man"; "dull days with nothing to do"; "how dull and dreary the world is"; "fell back into one of her dull moods"
emitting or reflecting very little light"a dull glow"; "dull silver badly in need of a polish"; "a dull sky"
being or made softer or less loud or clear"the dull boom of distant breaking waves"
同义词：muffledmutedsoftened
so lacking in interest as to cause mental weariness"a dull play"; "his competent but dull performance"
同义词：boringdeadeningho-humirksomeslowtedioustiresomewearisome
(of color) very low in saturation; highly diluted"dull greens and blues"
not keenly felt"a dull throbbing"; "dull pain"
slow to learn or understand; lacking intellectual acuity"although dull at classical learning, at mathematics he was uncommonly quick"
同义词：densedimdumbobtuseslow
(of business) not active or brisk"business is dull (or slow)"
同义词：slowsluggish
not having a sharp edge or point"the knife was too dull to be of any use"
blunted in responsiveness or sensibility"a dull gaze"; "so exhausted she was dull to what went on about her"
not clear and resonant; sounding as if striking with or against something relatively soft"the dull thud"
同义词：thudding
darkened with overcast"a dull sky"
同义词：greygrayleaden