农民过去用手打麦脱粒.Farmers used to thrash their wheat by hand.在一些村子里,农民用机器来打麦.In some villages farmers use a machine to thresh wheat.在有脱粒机之前,农民用手打麦脱粒.Before thrashing machines farmers thrashed their wheat by hand....
Thousands of years ago in Egypt, salt was used to embalm the dead.千万年前埃及人曾利用盐涂尸防腐.The Egyptians used to embalm the bodies of their deadkings and queens.埃及人以前用药物保存国王和王后的尸体.The Egyptians used to embalm the bodies of their ...