- mass noun fine, dry powder consisting of tiny particles of earth or waste matter lying on the ground or on surfaces or carried in the air灰尘, 尘土, 尘埃：
the car sent up clouds of dust
汽车扬起一团团尘土
they rolled and fought in the dust.
他们在尘土里翻滚扭打。
- with modifier any material in the form of tiny particles粉尘：
coal dust.
煤尘。
- in sing. a fine powder粉：
he ground it into a fine dust.
他将它磨成了细粉。
- in sing. a cloud of dust尘雾。
- poetic/literary a dead person's remains〈诗/文〉尸骨, 遗骸：
scatter my dust and ashes.
把我的遗骸和骨灰撒掉。
- poetic/literary the mortal human body〈诗/文〉凡身, 肉体：
the soul, that dwells within your dust.
居于你肉体之中的灵魂。
- in sing. an act of dusting除尘, 掸尘, 揩灰：
a quick dust, to get rid of the cobwebs.
迅速掸去蜘蛛网。
- remove the dust from the surface of (something) by wiping or brushing it除去…上的灰尘, 擦（或刷、扫、掸）净：
I broke the vase I had been dusting
我擦花瓶时把它打碎了
pick yourself up and dust yourself down
爬起来, 把身上的灰尘拍干净
no obj. she washed and dusted and tidied.她洗了把脸, 拍了拍灰尘并梳理了一下。
dust something down/off
bring something out for use again after a long period of neglect把（长期不用的东西）备好待用, 重新采用：a number of aircraft will be dusted off and returned to flight.
一些长期闲置的飞机将被重新启用。
- （一般作 be dusted）cover lightly with a powdered substance（把粉等）撒在…上：
roll out on a surface dusted with icing sugar.
在撒有糖粉的桌面上擀面。
- sprinkle (a powdered substance) on to something把（粉状物）撒于：
orange powder was dusted over the upper body.
躯体的上部涂的是橘子粉。
- US informal beat up or kill someone〈美, 非正式〉痛打, 狠揍; 杀死（某人）：
the officers dusted him up a little bit.
那些警官确实将他狠揍了一顿。
be done and dusted
- informal (of a project) be completely finished or ready〈非正式〉（工程）彻底完成, 准备就绪：
well, that's part one done and dusted.
这就是已经完成的第一部分。
dust and ashes
- used to convey a feeling of great disappointment or disillusion about something令人失望的事物：
the party would be dust and ashes if he couldn't come.
如果他来不了, 这个聚会会令人大失所望的。
the dust settles
- things quieten down混乱结束, 骚乱平息, 纷扰平静下来：
she hoped that the dust would settle quickly and the episode be forgotten.
她希望这混乱的局面快些结束, 这一插曲就此被忘却。
eat someone's dust
- N. Amer. informal fall far behind someone in a competitive situation〈北美, 非正式〉远远落在某人的后面, 望尘莫及。
gather（或 collect）dust
- remain unused被搁置, 将…束之高阁：
some professors let their computers gather dust.
一些教授把他们的电脑束之高阁。
leave someone/thing in the dust
- surpass someone or something easily轻松胜过, 远远胜于, 比…强得多：
today's modems leave their predecessors in the dust.
现在的调制解调器要比以前的强得多。
not see someone for dust
- find that a person has made a hasty departure发现某人已匆匆离去。
kick up a dust（或 〈美〉 kick up dust）
- informal create a disturbance〈非正式〉引起骚乱, 惹是生非。