1. I removed the fibroid tumours, using the techniques that I have perfected. 我用我完善过的技术切除了这些纤维瘤。
2. We perfected a hand-signal system so that he could keep me informed of hazards. 我们完善了一套手语体系,以便他能告知我危险。
3. Roman builders perfected the semicircular arch made of separate blocks of stone. 罗马的建造者完善了由不同的石块构成的半圆形拱门。
4. Journeymen knew that if they perfected their skill, they could become respected master artisans with their own shops. 熟练工们知道,如果他们完善自己的技艺,就可以成为受人尊敬的手工艺大师,并能拥有属于他们自己的店铺。
5. Over the past decade, many companies had perfected the art of creating automatic behaviors — habits — among consumers. 在过去的十年中,许多公司已经完善了在消费者中创造无意识行为(习惯)的艺术。