Unit 85.That's for sure.

85.那当然。

A:It sure is hot today.

甲：今天确实好热。

B: That's for sure.I feel like l'm melting.

乙：那当然。我感觉似乎要熔化了。

类似用语

That's true.   
那是真实的。

There's no doubt about that．   
那是不容置疑的。

百宝箱

for sure亦有下列的用法：

tell+人+for sure+that引导的宾语从句肯定地告诉某人某事

I can tell you for sure that it'll rain this aftemoon.
（我可以肯定地告诉你今天下午会下雨。）