The dusts-removing abilities of four types of evergreen trees are ranked as: spruce, needle juniper, Sabina chinensis, and pitch pine.

四种常绿乔木的除尘能力等级排列为：云杉，针刺杜松，圆柏和柏油松。

She dusts furniture every day.

她每天掸拂家具。

The desk is covered with dusts.

桌子被灰尘覆盖了。

She dusts every day.

她每天掸灰尘。

Don't use dusts in excessively damp situations.

不要在潮湿的环境中使用粉剂。