让他给家具除尘并把它们擦亮。Let him dust and shine the furniture.真空吸尘器靠抽吸除尘。Vacuum cleaners work by suction.经实际测试表明, 机组的除尘效率达99.Finally , through the actual test, unit's collection efficiency reaches above 99....
书桌摆在房间里较远的一头.The desk is placed at the further end of the room.在较远的距离处较低的导弹速度也许将不会限制导弹的作用范围.A lower missile speed at greater range will probably not restrict the coverage.另一方面, 在距离较远的地方, 只有那些容易燃烧的材料才会着火.On the other hand...