ultimatum
🇺🇸
/ˌʌltɪˈmeɪtəm/
🇬🇧
/ˌʌltɪˈmeɪtəm/
A demand that someone must do what you say or else you will do something unpleasant to them.
The company gave the workers an ultimatum: accept the new contract or lose their jobs.
公司给工人下了最后通牒:接受新合同或失去工作。