It means being very good at what they do.
Tropical? what do you mean by "excellent"?
scope of practice mean
When something is Excellent it is better than good.
excellent
It can mean 'of excellent quality' or it can mean 'of your choosing'.
The colonist wanted a practice of religon
excellent job
"Unitocracy: The political practice of governing as though multiple parties can be domocratically elected, while ruling from behind each of them. Excellent for averting revolution" (EXURB1A 97). -The Fifth Science, by EXURB1A
To practice being healthy.
excellent
excelente
It means 'excellent' and 'exciting'.