another kettle of fish

• 另一码事； 另一问题

another kettle of fish的用法和样例：

例句

1. Deciding who is or is not a woman is another.
   而决定谁是或不是女性又是另一码事。
2. Whether we can stay with my mother is another matter.
   我们能否和我母亲住在一起是另外一码事。
3. Some people examine this issue from another angle.
   有的人用另一角度来看这一问题。
4. She gave them a piece of her mind on the subject.
   她向他们坦率地说出了自己对这一问题的看法。