firm up

US /fɜːrm ʌp/
UK /fɜːrm ʌp/
"firm up" picture
1.

确定, 落实

to make something more definite or certain

:
We need to firm up the details of the contract.
我们需要确定合同的细节。
Can you firm up your plans for the weekend?
你能确定你周末的计划吗?
2.

凝固, 变硬

to make something physically stronger or more solid

:
The concrete needs time to firm up before we can build on it.
混凝土需要时间凝固,然后我们才能在上面施工。
The jelly will firm up in the refrigerator.
果冻会在冰箱里凝固