firm (adj.)
坚固的、稳定的

例句：
You must always build on firm ground.
你必须始终脚踏实地。

for good and all
永久、一劳永逸

例句：
I wish cancer will be wiped out for good and all some day.
我希望有朝一日永远消灭癌症。

What do we have for dinner?
我们晚餐吃什么？

对话：
A: What do we have for dinner?
B: It doesn't make any difference to me. Whatever you say.
A: I feel like having some seafood.
B: All right.

A：我们晚餐吃什么？
B：对我来说无所谓。随便你。
A：我想吃海鲜。
B：好吧。