1ADV 确实；肯定地 You use positively to emphasize that you really mean what you are saying. 确实；肯定地 [emphasis]
This is positively the worst thing that I can even imagine.
这确实是我能想象到的最糟糕的事情。
This is positively the last chance for the industry to establish such a system.
这绝对是该产业建立这样一个体系的最后机会了。
SYN definitely, surely, firmly, certainly
2ADV [ADVERB adjective, ADVERB before verb]的的确确；毋庸置疑 You use positively to emphasize that something really is the case, although it may sound surprising or extreme. 的的确确；毋庸置疑 [emphasis]
He's changed since he came back — he seems positively cheerful.
他回来后变了个样，看起来确实很高兴。
Parents are positively encouraged to be at school whenever possible.