do or die
US /duː ɔːr daɪ/
UK /duː ɔːr daɪ/

1.
生死攸關, 不成功便成仁
a situation in which one must either succeed or fail completely
:
•
This is a do or die situation for our team.
這對我們團隊來說是生死攸關的局面。
•
It's do or die for the company; they need to secure this contract.
這對公司來說是生死攸關的;他們需要確保這份合同。