dusts/dʌst/名词灰尘；尘土；沙土coal dust煤灰/dʌst/动词擦去…的灰尘，给…除尘I was dusting the mantelpiece when I noticed a crack.我在擦壁炉台的时候发现了一道裂纹。在…上撒（粉末）Dust the top of the cake with icing sugar.在蛋糕上撒些糖霜。想跟读，去练习
