~ぶんには(~分には) => as long as ~ N1
…のも無理 (は) ない => It's natural for... N3
Evaluate
を中心に => focused on; centered on~ N2
のも無理もない => (to be) natural,(to be) understandable N3
Evaluate
[中心「ちゅうしん」]に => With A as the center N2
Miscellaneous