Are you sure you've got that on the right way round?
你能肯定你沒有穿反嗎？
One thing is for sure ─ it's not going to be easy.
有一點可以肯定——事情不會很容易。
I'm sure that you will get your wish.
我相信你會心想事成。
Make sure you park your car clear of the entrance.
切莫把車停在入口處。
We make sure our clients get the best that money can buy.
我們確保客戶買到最好的產品。