1ADV-GRADED [ADVERB before verb]清楚地;明显地;肯定地;当然 You use definitely to emphasize that something is the case, or to emphasize the strength of your intention or opinion. 清楚地;明显地;肯定地;当然 [emphasis]
I'm definitely going to get in touch with these people.
我肯定会跟这些人取得联系。
Something should definitely be done about that.
对此一定要采取一些措施。
'I think the earlier ones are a lot better.' —'Mm, definitely.'