Even if you have spent many hours polishing your CV, without a good covering letter, your work is only half done.
即使你花了好几个小时在优化简历上，没有一个好的求职信，你的工作也是算做了一半。
The benefit of modern abrasive technology is that it is now often possible to go straight from compounding to applying wax or sealant protection without the need for intervening polishing steps.
现代研磨剂科技的好处是现在它通常可以从使用研磨剂研磨后直接上蜡或上密封防护剂，而不需要中间其他的抛光程序。
Surface of metal was smooth without changes after polishing.
抛光的金属表面平坦，无结构改变。
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