1. He spent more time perfecting his dance moves instead of gym work. 他用更多的时间来完善他的舞蹈动作而不是健身。
2. I don't know about perfecting but they want at least to be able to communicate decently. 我不知道如何完善，但他们想要至少能够得体地交流。
3. CIBC is also perfecting the technique for breeding parasites that prey on "disapene scale" insects. CIBC 还在完善培育寄生虫的技术，这些寄生虫以“disapene scale”昆虫为食。
4. As a musician, she has spent years perfecting her technique. 身为音乐家，她多年来不断在技艺上精益求精。
5. He wanted to build institutions that would be used for the sole purpose of perfecting the slave into the perfect worker. 他想建立一种制度，这种制度的唯一目的就是让奴隶成为完美的工人。
