income可数吗

　　例句：

　　His income is well below the average.

　　他的`收入大大低于平均水平。

　　My monthly income was just over 200 pounds.

　　我每月的收入是200多磅。

　　He needs a high income to support such a large family.

　　他需要有高收入才能供养得起这样一个大家庭。