に足る => worthy; worth doing N1
に足りない/に足らない => cannot; not worthy; not worth doing ~ N1
~たると ... たるとをとわず => regardless of; irrespective of; no matter~ N1
Simultaneously
を問わず => regardless of; irrespective of; no matter~ N2
~をかわきりに(~を皮切りに)      => One after another; starting with ~ N1
~むきがある(~向きがある)     => There is a tendency N1
... を抜きにしては => If it weren't for… N2
Confirm
をかわきりに => Starting with A N1
Miscellaneous
を[機「き」]に => Use A as an opportunity N1
Time, Situation
に...ができる => complete N4
Completed
できる => Can do something N5
~やむをえず  => unavoidable, no other way to do something N2
Necessity, obligation