1.[u]沙土；尘土a fine powder that consists of very small pieces of sand, earth, etc.
A cloud of dust rose as the truck drove off.卡车开过时扬起一片灰尘。
The workers wear masks to avoid inhaling the dust.工人们戴着面罩避免吸入尘土。
2.（建筑物内、家具或地板等上的）灰尘，尘埃the fine powder of dirt that forms in buildings, on furniture, floors, etc.
The books were all covered with dust.书上积满了灰尘。
There wasn't a speck of dust anywhere in the room.屋子里处处一尘不染。
That guitar's been sitting gathering dust(= not being used) for years now.那把吉他现已尘封多年。
3.粉尘；粉末a fine powder that consists of very small pieces of a particular substance
coal/gold dust煤粉；金粉
1.[i][t]擦去…的灰尘；擦灰to clean furniture, a room, etc. by removing dust from surfaces with a cloth
I broke the vase while I was dusting.我擦灰尘时将花瓶打碎了。
Could you dust the sitting room?你把起居室擦一擦好吗？
2.[t]~ sth (+ adv./prep.)掸去；擦去；刷去to remove dirt from sb/sth/yourself with your hands or a brush
She dusted some ash from her sleeve.她掸去袖子上的灰末。
3.[t]~ sth (with sth)把（粉末）撒于；撒（粉）to cover sth with fine powder
Dust the cake with sugar.把糖撒在蛋糕上。
She immediately recognised the highly sought-after brooch, which had been gathering dust at the bottom of her jewellery box for 40 years.
她立刻认出了这枚专家们正在寻找的珍宝，就是她珠宝盒中蒙尘40余年的别针。
Who are the heart of Acacia, species into the red beans. Wait for me to grind beans into dust, Acacia did not see there?
是谁把心里相思，种成红豆。待我来碾豆成尘，看还有相思没有？
Computer keyboard keys aperture stains and dust to clean up, these seem to have to carefully place, often let our cleaning job not start.
电脑键盘的按键缝隙容易留下污渍和灰尘，这些清洁起来似乎不得不小心翼翼的地方，往往让我们的清洁工作无从下手。
All of, you know. . . the dust that may be an issue, coming off the Gobi Desert. All of those things that BOCOG is trying to address.
所有的，你们知道…可能带来问题的尘埃，来自戈壁沙漠。所有那些是北京奥组委尝试解决的东西。
Besides the dark dust, NGC 7049appears similar to a smooth elliptical galaxy, although featuring surprisingly few globular star clusters.
除了暗黑尘埃，NGC7049则与平滑的椭圆形星系相似，尽管其具有令人吃惊的几个球状星团。
the only car visible was the dust-covered wreck of a Ford which crouched in a dim corner.
只看见一辆汽车，一部盖满灰尘、破旧不堪的福特车，蹲在阴暗的角落里。
Let the enemy persecute my soul, and take it; yea, let him tread down my life upon the earth, and lay mine honour in the dust. Selah.
就任凭仇敌追赶我，直到追上。将我的性命踏在地下，使我的荣耀归于灰尘。（细拉）
The aging PC gathering dust in the guest room? Ready to catch the next quake.
老化的个人电脑采集客厅里的灰尘，这是在准备捕获下一次地震的信息。
Hate him she did not quite; but he was dust and ashes to her, and even for her name's sake she scarcely wished to marry him.
她也并不十分恨他；不过在她看来，他不过是一撮尘土，即使为了自己的名声打算，她也几乎没有想过要嫁给他。
Once my eyes got used to the dim, I gazed around, hoping to see shimmery rocks littering the floor, but dust was all I saw.
当眼睛逐渐适应了周围的黑暗环境，我环视四周希望能在地上发现一些闪光的石头，入目却是满眼的灰尘。
Perhaps he had not found any more candidates, but the statuettes were still there, glimmering and gathering dust on top of the cupboard.
也许是因为他没有找到更多的侯选者，那些雕像还在老地方，在那橱柜顶上白晃晃的落满尘埃。
If she was just as rain, he will think of him, deep eyes, like that had a field if light dust dream.
她若雨飘飘，只为他之意，想起他深深的眼眸，似曾经的那一场如若轻尘的梦。
If your daughter volunteers to clean you house, you can't point out to her, the way you could when she was a teenager, the dust she missed.
如果女儿主动帮你打扫房间，你不能指出她有些地方打扫得干净，落下了灰尘，而在她十几岁的时候你完全可以这么做。
Surface must be completely cleam. dry and free of dust and oil. If applied on plastic, polish the surface with sand paper to make it rough.
接合面必须清洁，干燥，无灰尘或油污，若是塑料物件，应先用砂纸打磨其表面，使之粗糙。
Convection within the red giant dredges the new proto-dust atoms from the core up to the surface.
红巨星内部的对流碰撞出新的原始尘埃原子会从其核心撞到表面。
General Use: Use of a respirator* with a dust filter is recommended when exposure to metal fluorides is possible.
一般的使用：当有可能暴露于金属氟化物时，推荐使用带滤尘器的呼吸器。
I felt that the dust -- I had an intermittent cough, you know, but that all came to a head when I chased a suspect later on.
我能感觉到那些灰尘——那时我已经患上间歇性的咳嗽，你知道，后来当我追捕一个犯罪嫌疑人时，所有的症状才表现出来。
In order to do his scientific experiment, Edison had to be out for dust at the age of his teens.
为做科学实验，爱迪生在十多岁的年纪时就得出去挣钱。
It will become fine dust over the whole land of Egypt, and festering boils will break out on men and animals throughout the land.
这灰要在埃及全地变作尘土，在人身上和牲畜身上，成了起泡的疮。
Among them lay collar and tie, as if they had just been removed, which, lifted, left upon the surface a pale crescent in the dust.
杂物中有一条硬领和领带，仿佛刚从身上取下来似的，把它们拿起来时，在台面上堆积的尘埃中留下淡淡的月牙痕。
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