Know for a certainty that...
确实知道...
🧩 词语组成解析
know
[no]
v. 知道;了解;认识;确信;
n. 知情;
for
[fɚ]
prep. 为，为了;倾向于;关于;当作;
conj. 因为，由于;
🗣️ 情景例句
Something else I was wondering about was...
我想知道其它事是^
What is learned in the cradle lasts till the grave.
婴孩时期学到的东西，老死不会忘记。
But the market prices are changing frequently.
但是市场价格随时都在变化。