英语翻译The vacuum cleaner is a valuable labor-saving device act
The vacuum cleaner has a unique 600-watt motor that provides
vacuum cleaner是什么意思
英语翻译steady flow of we produce a steady flow of labor —saving
英语翻译For pre-vacuum generation the pre-vacuum pump is connect
英语翻译May first is a Sunday.And it is the Labor’s Day.My mothe
英语翻译the radiator is a device designed to dissipate the heat
英语翻译A critical eye is valuable,and the media should present
英语翻译The mouse is a most effective device used by people to c
英语翻译An auction is a sales device whereby members of the publ
英语翻译the diode is a two-terminal device.Diods have two active
英语翻译In Japan,the latest time-saving invention is a dog-washi
句意填词(首字母已给).The vacuum cleaner can produce movement (e ).