Diamonds have extreme resistance to abrasion.钻石极抗磨损.Erosion of pipes and vessels from abrasion by particles can be serious.由于固体颗粒的磨蚀作用,管子和容器的磨损严重.Abrasion also abets wind erosion.磨损作用也助长了风的侵蚀....
It was a lovely dog. It was a cross between a collie and a golden retriever.那条狗可爱极了，是柯利牧羊犬和金毛猎犬的杂交品种。The collie came across the yard, sniffing around the truck.小狗穿过场院跑过来围着卡车嗅来嗅去.A pheasant called from the fields . Jack ,...
我不该把我的公文包和相机包留在那儿无人看管。I should not leave my briefcase and camera bag unguarded.公文包重重地落在桌上。The briefcase flopped onto the desk.设计精巧的小公文包a natty little briefcase...