A new machine called 'The Revealer' has been invented

A new machine called 'The Revealer' has been invented 'The Revealer' is a new machine which is used for detecting 英语 the new machine has been tested The factory has bought a new machine It is said they he has invented a new machine. He ____ _____ They have invented a new (type) of washing machine. _____ his fifth year, he invented a new machine. the machine has been recovered this The factory has bought a new machine to make the spare parts 求解释,A与B的区别The machine has been over-used. ________ it doesn' the machine has been used to detect gold.the machine has bee 英语翻译The roof of a perennial called astragalus has long been