set in stone

set in stone

= something is fixed, unchangeable, or permanent

= 固定不變、不可改變或永久不變;

The treaty was signed, but its terms were not set in stone and were later renegotiated.

條約已簽署，但其條款並非一成不變，後來經過重新談判。

The project timeline is flexible and not set in stone, allowing for adjustments as needed.

專案時程靈活，並非一成不變，可依需求進行調整。

While the guidelines for the course are established, they are not set in stone and may evolve based on student feedback.

雖然課程指導方針已經確定，但並非一成不變，可能會根據學生的回饋進行調整。

The script is a draft and not set in stone; revisions will be made after the first round of feedback.

腳本目前為草稿，並非一成不變；第一輪回饋後將進行修改。

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