“slowly but surely” 表示 “有条不紊，踏踏实实，缓慢而稳步地做某件事情，稳扎稳打”。

【例句】
If you do your revision slowly but surely, you’ll do well in your exam.
如果你们稳扎稳打地复习，就会考得很好。

We took the journey slowly but surely and got to our destination safely.
我们稳稳当当地上了路，安全到达了目的地。