を中心に => focused on; centered on~ N2
[中心「ちゅうしん」]に => With A as the center N2
Miscellaneous
をください => Please give me N N5
Asking and Telling
をくれる => to do a favor; request a favor; do something for ... N5
Benefit
を[余儀「よぎ」]なくされる => Must do A N1
Will, Decision, Doing
~をたて(~を経て)      => through; after; via N1
を => Auxiliary words N5
をくださいませんか => Please give me A (polite) N5
Asking and Telling
~のを => Nominalize verbs N5
Nominalization
を通じて/を通して => through; via; throughout; by ~ N2
をもって => with... N1
Means and methods
を~として => as N2