英语语法分析

There is evidence that firms believe they are behaving rationally whenever they downsize; yet recent research has shown that the actual economic effects of downsizing are often negative for firms.

有证据表明，企业认为，无论何时裁员，他们的行为都是理性的；然而最近的研究表明，裁员对企业的实际经济影响往往是负面的。

In order to set up and improve this system, we must downsize staffs and improve efficiency.

为了建立和完善这一新体系，我们必须要减员增效。

"But" How can companies downsize ethically?

裁员是否道德“而是”公司怎样做使得裁员更为人道？