firm up
US /fɜːrm ʌp/
UK /fɜːm ʌp/
片語動詞
1.
2.
凝固, 變硬
to make something physically stronger or more solid
範例:
•
The concrete needs time to firm up before we can build on it.
混凝土需要時間凝固，然後我們才能在上面施工。
•
The jelly will firm up in the refrigerator.
果凍會在冰箱裡凝固。