to throw one's hand in
01
认输退出, 看不到希望就放弃
to give up doing something or stop being a part of something, particularly due to seeing no way of success
例子
After months of failed negotiations, the union threw its hand in.
经过几个月失败的谈判，工会最终认输退出了。
认输退出, 看不到希望就放弃
经过几个月失败的谈判，工会最终认输退出了。
