be sure

[usu. in imperative]do not fail (used to emphasize an invitation or instruction)

一定要；務必（用于強調邀請或指示）

[with infinitive]be sure to pop in.

一定要來。

[with clause]be sure that you know what is required.

務必弄清楚要求是什么。

for sure

(informal)without doubt

(非正式)毫無疑問

I can't say for sure what Giles really wanted.

我說不準賈爾斯真正想要的是什么。

(as) sure as eggs is eggs

(亦作 as sure as fate)without any doubt

千真萬確，無可置疑

sure enough

(informal)used to introduce a statement that confirms something previously predicted

(非正式)果真

when X-rays were taken, sure enough, there was the needle.

拍完X光片后，果真有一根針。

sure of oneself

very confident of one's own abilities or views

非常自信

he's very sure of himself.

他非常自信。

sure thing

(informal)a certainty

(非正式)確定無疑的事情

for sure【非正式用語】

Certainly; unquestionably

確切地；毫無疑問地

We'll win for sure.

我們肯定會獲勝

make sure

To establish something without doubt; make certain

弄清楚；確保

Make sure he writes it down.

讓他一定記下來

to be sure

Indeed; certainly.

確實；當然