1. U.S. government specialists went through each page, blacking out any information a foreign intelligence expert could use. 美国政府的专家们检查了每一页，用黑色涂掉任何可能被外国情报专家利用的信息。
2. They're done with blacking, I believe. 我想它们已经不再用黑鞋油了。
3. With the dollar he bought a box, three brushes and some blacking. 他用这一美元买了一个盒子，三个刷子和一些黑鞋油。
4. The family's increasing poverty forced Dickens out of school at age 12 to work in Warren's Blacking Warehouse, a shoe-polish factory. 家庭的日益贫困迫使狄更斯在12岁时辍学，到沃伦的鞋油厂仓库工作。
5. The humiliations of his father's imprisonment and his labor in the blacking factory formed Dickens's greatest wound and became his deepest secret. 对于狄更斯来说，父亲入狱所带来的耻辱和在黑鞋油厂工作的经历是他最大的创伤，也是他最深的秘密。
