Non-negotiable: When there is something you know you must have, you can always make it not negotiable.

不可交涉的：当有个条件是你必须拿下时，你自然可以把它设定为非交涉条件。

youdao

The loss of negotiable instrument is that the bearer lost negotiable instrument but not on his inclination.

所谓票据丧失，即持票人并非出于自己的本意而丧失对票据的占有。

youdao

Our system is deeply stressed, our financial and our natural resources are limited and our needs are not negotiable.

WHITEHOUSE: Blog Action Day: Protecting America��s Waters Today

Immediate demands and needs are not negotiable and leave little room for error.

FORBES: The Innovator's Paradox: Hamlet Had The Answer All Along

Some of the most fertile negotiation situations are those that people think are unmovable or not negotiable to begin with.

FORBES: They Negotiate at Jezebel