fixed

adj. /fɪkst/

arranged or decided already and not able to be changed

确定的;不能变的

a fixed expression 固定表达

fixed interest rates 固定利率

Is the date of the wedding fixed yet?

婚礼日期确定了吗?

A fixed time is allotted for each question.

每个问题都限定回答时间。

I'm sorry.We only sell at fixed prices.

很抱歉，我们店不还价。