在工业上，金刚石可以用作工具表面坚固、耐腐蚀的覆盖层。In industry, diamond can form a tough, non-corrosive coating for tools.覆盖层屏蔽掉了放射性.Overburden had concealed the radioactivity.覆盖层升高至地表.The confining material rises to the surface....
Now you're bragging, darling. You know you don't need to brag.这就是夸口, 亲爱的. 你明知道你不必吹.He's always bragging about his prowess as a cricketer.他总是吹嘘自己板球水平高超。He'll probably go around bragging to his friends....