keep improving的用法和樣例：
例句
- We keep improving our work with no exception of the trifles.
我們對工作精益求精，即使是些微小事也不例外。 - As we constantly keep improving, customers from all around the world think highly of us because of our unique workmanship, fine quality and well credit standing.
正如我們不斷精益求精，客戶來自世界各地的高度評價，認為我們是因為我們獨特的手藝，優良的質量和良好的信譽。
