perfecting
v. （使）完美，完善；（使）完全，完成；双面印完（一页纸）；（使）合法转移（perfect 的现在分词）
例句
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。
《柯林斯英汉双解大词典》
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。
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。
