共患难，同生死

指共同承担灾难和危险，一起经历生死的考验。
也作
❶ 共患难，共苦乐。
❷ 共存亡。
❸ 同甘苦，共患难。

共患难，同生死同生死，共患难gòng huàn nán , tóng shēng sǐ

share weal and woe; suffer adversity together
❍ 咱们三个情逾骨肉，～，现在老三一个人受罪，咱们能坐视不救吗？(高云览《小城春秋》223)We three are as close as flesh and bones- —we've sworn to suffer adversity together. Wu Jian is having a hard time. Can we sit by without trying to help?