Something that is excellent is extremely good.
The recording quality is excellent.
录制质量极好。
Some people say 'Excellent!' to show that they approve of something.
'Excellent!' he shouted, yelping happily at the rain. 'Now we'll see how this boat really performs!'
“太好了!”他冲着雨高兴地喊着,“这下我们可以看看这艘船的真实表现了!”