not set in stone

The circumstances of life are not set in stone.

生命的情形并不是固定不变的。

The builds I've listed above are not set in stone.

我在以上所列的天赋并非一成不变的。

We can be very flexible ─ our entry requirements are not set in tablets of stone.

我们可以非常灵活，加入条件并非铁板钉钉。

Do not move your neighbor's boundary stone set up by your predecessors in the inheritance you receive in the land the LORD your God is giving you to possess.

在耶和华你神所赐你承受为业之地，不可挪移你邻舍的地界，那是先人所定的。

Note: The 20-70-10 distribution is not set in stone.

请注意：20-70-10的比例分配并非固定不变的。

however, the quality of attachment and attachment style is not set in stone, when the family environment, education, etc. change, the individual quality of attachment and attachment style will also change accordingly.

但是依恋质量高低和依恋风格并不是不变的，当家庭环境、教养方式等发生变化，个体的依恋质量和依恋风格也会相应的发生改变。

It's only a rough draft, not set in stone.

那只是初稿，不是象刻在石头上一样不能改变。

(figurative)We can be very flexible─our entry requirements are not set in tablets of stone (= they can be changed) .

我们可以非常灵活，加入条件并非铁板钉钉。