We don't have a strong bridge between research and practice.

我们在研究和实践之间没有牢固的桥梁。

Because they have accumulated a system of expertise in their domain after years of research and practices and been acknowledged by their peers and the public.

因为他们在某一领域拥有丰厚的知识储备，他们经过了多年的研究和实践，并得到了同行和公众的认可。

It took decades of research and practice to be able to pull off such procedures, and even the ones that have become commonplace still face complications.

进行此类手术需要数十年的研究和实践，即使是那些已经司空见惯的手术仍然面临并发症。