にわたって/にわたり => Over the course of A (continuous action), Throughout A N2
Time, Situation
[一方「いっぽう」]だ => Change A continues, A does not stop N2
Miscellaneous
[一方「いっぽう」] => On one hand A, on the other, B; Although A, at the same time, B N2
Contrast,Surprise
かたわら => While doing A, (B) N1
Information, Report
めったにない => Rarely N3
Degree. Level, Amount
ところだった => About to… N3
Will, Decision, Doing
したがって => Because of A, B N2
Reason, Result, Response
といったらない/といったらありはしない => Extremely A, Very A, A beyond description N1
Degree/ Level/Amount
といえば/というと/といったら => N3
Considering, Concerning
わ => Very, so, already N5
Particles
にあたって/にあたり => At the time of A (which starts now).., on the occasion of A N2
Time, Situation
[全「まった」]く~ない => Not A (at all; even a little bit) N3
Not only, Not even