一方では...他方では => On the one hand N2
Compare
…のも無理 (は) ない => It's natural for... N3
Evaluate
のも無理もない => (to be) natural,(to be) understandable N3
Evaluate
よく => Often... N5
Repetition, habit
昼となく夜となく => day and night N1
Continuous
よく => good, well N5
Emphasis on degree
からつくる/でつくる => made from; made with N4
おくに => Which country N5
Doubt
~くらいで      => only N1
くて => Adjective and adjective N5
List
とかく => anyway, anyhow N2
Vague
... ときく => I heard N2
Speculation