the process of starting to include more different types or things

Diversification of your investments lowers risk. 投资的多样化可以降低投资风险。

The policy may also offer improved energy security through diversification of energy sources. 该政策还可以通过能源来源的多样化来增强能源安全。

the process of starting to make new products or offer new services, or an instance of this

The government offered help for diversification into new farm products and food processing. 政府为新农产品和食品加工的多样化提供帮助。

For the company, it's a sensible diversification of their product range. 对于该公司来说，这是一个明智的多样化产品范围。