We can reduce the problem to two main issues.

　　我們可以將這個(gè)問(wèn)題概括成兩個(gè)要點(diǎn)。

　　There is some noise in the data which needs to be reduced.

　　資料里有一些需要刪除的不適用信息。

　　We'll need to reduce the weight by half.

　　我們得把重量減輕一半。

　　If these measures also reduce unemployment, that is all to the good.

　　要是這些措施也能降低失業(yè)率，那就不失為好事。

　　These measures would make a valuable contribution towards reducing industrial accidents.

　　這些措施將會(huì )對減少工業(yè)事故起重要的作用。