~きわまる/きわまりない(~極まる/極まりない)      => extremely; very ~ N1
がわかります => Capacity N5
Ability
[極「きわ」]み/[極「きわ」]まりない => Extremely A N1
Degree/ Level/Amount
ひとつまちがえば => Just (negligence) N3
Ability
まわる => to go around N3
Go through, go through
とりわけ => especially; above all ~ N3
Emphasis on degree
ひとり ... のみならず => not only…, not just… N2
Add
ひとり ... だけでなく => not only…, not just… N2
Add
わりに => Considering A, B N2
Considering, Concerning
わりには => for, despite, although, unexpectedly N3
ひととおりではない => Not as usual (is okay) N2
Emphasis on degree
あまり => so much… N3
More or less in quantity