精练的

例句：

1. 1. The chef has meticulously refined the recipe for the dish.
   厨师已经仔细地对这道菜的食谱进行了精炼。
2. 2. The writer has skillfully refined his writing style.
   这位作家已经巧妙地精炼了他的写作风格。
3. 3. The engineer has carefully refined the design of the new machine.
   工程师已经仔细地精炼了新机器的设计。