A seagull swooped down in front of her car, causing her to slam on the brakes.一只海鸥突然扑到她的车前，她急忙猛踩刹车。She let the door slam.她听任门砰地关上。I was relieved to hear the front door slam...听见前门砰的一声关上了，我松了一口气。When you slam, you should ...
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....