sin dolor betyder på engelska

painless▼(without pain or trouble)
adjective
[UK: ˈpeɪn.ləs] [US: ˈpeɪn.ləs]

no pain, no gain▼(discomfort is necessary to achieve goals)
phrase
[UK: nəʊ peɪn nəʊ ɡeɪn] [US: ˈnoʊ ˈpeɪn ˈnoʊ ˈɡeɪn]