例句：
I'm certainly never going there again.
我肯定不會再去那里了。
'Certainly not,' he replied emphatically.
“當然不。”他斷然回答道。
Moby certainly has a fine ear for a tune.
莫比對音調的分辨能力一定很強。
Our future looks uncertain.
我們似乎前途渺茫。
Her future is uncertain.
她前途未卜。
They're both uncertain about what to do.
他們兩人都拿不定主意該怎么辦。