切る/切れる/切れない => to do something completely to the end/unable to do; too much to finish/complete N3
[切「き」]れない => Can't finish/complete A N3
Potential, Possibility
切る => Give up, stop... N3
Happens next
~をかわきりに(~を皮切りに)      => One after another; starting with ~ N1
~すればいいものを => if only (someone) would do (something), should have done (something) N1
Criticize
これだけ … のだから ... => To this extent... N2
Emphasis on degree
それなのに => and yet; despite this; but even so ~ N2
~のは…ぐらいのものだ => only (emphasis) N1
Limit
... ものと考えられている => one can think that; it is conceivable that; considered ... N2
Of course
…ものと考えられている => one can think that; it is conceivable that; considered ... N2
Of course
これ/それ/あれ => this/that N5
Spatial relations
いずれにせよ => anyway N2
Situation