good in appearance and mind, this meaning——good person
Vaggabandhana-bandhana=Vagga
Vagga+iya=vaggiya
bhaddaka—ka=bhadda
bhadda+vaggiya=bhaddavaggiya
“ letter-‘vo’ is just indeclinable word” by this explaination it is not the “yo”-declension of the word “tumha”
“indeed” means really.
“They” refers to 卓越团.
“This” refers to undertaking the five precepts.
“past 业” means the wholesome 业 accumulated in the past.