You may give a cold shoulder to a friend who has not kept a promise he made to you. Or, to someone who has lied about you to others. 当你的朋友没有信守诺言,或者某人在其他人面前对你说三道四时,你会对他冷漠。
A cold fish is not a fish, it is a person. “冷鱼”不是指鱼,而是指态度冷淡的人。
But it is a person who is unfriendly, unemotional and shows no love or warmth. 但是它指的是不友好、无感情、不表露爱和热情的人。
A cold fish does not offer much of himself to anyone. 态度冷淡的人不把他自己袒露给任何人。
Someone who is cold fish could be cold-hearted. 某个态度冷淡的人可能是无情的人。