In land animals, saliva contains mucus, and provides lubrication for food in the alimentary canal.陆上动物的唾液内有粘液, 并对消化道内的食物起着润滑作用.In metal lubrication two distinct regions are recognized: boundary and hydrodynamic.在金属的润滑作用中...
我们觉得英国糖蜜布丁太好吃了，令人无法抗拒。的确非常美味。We found the English treacle pudding too good to resist. Sure enough, it was delicious.糖蜜有些许通便作用，兼具强身功能。Molasses are mildly laxative and something of a general tonic.糖蜜作为一种饲料成分与精料混合并不容易.Molas...