世界上的一些农村仍遭受着很多问题，如糟糕的道路条件，破旧的厕所，肮脏的环境，以及发展不完善的公共基础服务等。

Some villages in the world still suffer from problems such as poor road conditions, shabby toilets, dirty environment, and undeveloped basic public services.

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儿童福利机构发展成熟、体系完善。

Child welfare services are well established and comprehensive.

《柯林斯英汉双解大词典》

这一领域的技术经过过去十年的发展已经相当完善。

Technology in this field has matured considerably over the last decade.

《牛津词典》

That also happens through development, and in fact, it goes through development and even teenagers are not fully myelinated.

髓鞘的形成也同样发生在发展过程之中,实际上,髓鞘的形成贯穿整个发展过程,即便是青少年的髓鞘也并未完全发育完善

耶鲁公开课 - 心理学导论课程节选

They found, not surprisingly, that it tends to--mutual funds have been growing more rapidly in countries that have stronger securities laws and institutions, especially laws that protect individual shareholders rights.

他们发现,那些共同基金发展较迅速的国家,都拥有比较健全的证券法规和完善的证券制度,其中保护个人股东权利的法律尤为完善

耶鲁公开课 - 金融市场课程节选

But the other reason to go through the thermodynamic cycles and really to develop great facility with them is because there are just an awful lot of things in nature and things that we build that run in cycles, where we want to calculate the thermodynamics, right.

但是要推导热力学,循环并为之发展一套,完善方法的另外一个原因是,自然界中或人造的那些,我们想计算它们的热力学的东西,有很多是以循环的方式运作的。

麻省理工公开课 - 热力学与动力学课程节选