Since many years ago, we have been trying to develop, study and innovate so as to make our products better and better.

不断开拓、研究、创新，多年来一直坚持产品优质、新颖，从而获得国内外客户的认同。

www.herostart.com

Heat stress damage is still one of the important reason that reduce the economic benefit of broiler breeding since many years ago.

多年以来，高温热环境给肉仔鸡带来的应激损伤一直成为降低肉鸡养殖业经济效益的重要原因。

dict.cnki.net

I have been engaged in trying the medical cases since many years ago, and also have shown my own opinions of the medical disputes in my many writings.

笔者多年以来从事医疗纠纷的审理工作，也曾就医疗纠纷先后对若干问题进行过探讨。

www.zhaona.com

But a vaccine became available about ten years ago, and since then many children in the United States have been inoculated.

NPR: Slate's Medical Examiner: Chickenpox Vaccine Risks

P. board just made the worst personnel decision since the idiots on the Apple board fired Steve Jobs many years ago.

FORBES: Apotheker Wasn't the Problem At HP; It's The Board

Since its accession almost ten years ago, Beijing has pursued mercantilist policies—many of them violative of its trade promises—to force manufacturing to move to China.

FORBES: Look, Ma, I Found 923,000 Jobs and $48 Billion