interest作为利益可数吗

　　例句：

　　He's good at looking after his own interests.

　　他善于照顾自己的利益。

　　We each have different needs and interests.

　　我们每人有不同的需要和兴趣。

　　These policies are inimical to the interests of society.

　　这些政策有损于社会的利益。

　　She told him she only had his interests at heart.

　　她告诉他，她心里头只有他的利益。

　　Did those directors act in the best interests of their club?

　　那些董事们是从他们俱乐部的最大利益出发而行动的吗？