手前 => considering; before; in front of; one’s standpoint N1
~やむをえず  => unavoidable, no other way to do something N2
Necessity, obligation
のが上手 => to be good at doing something N5
のが下手 => to be bad at doing something N5
てやる => Do for someone N4
Give and take advice
やる => Give B to A N4
Give and take advice
...を...みる => judging from; seeing that ~ N4
Deduce
...を...にする => to make something ~ N4
Purpose, target
姿を見せる => figure; appearance N3
Ability
や => ... or... N5
Line up, list
... るや => at the sight of; upon seeing; right after confirming ~ N1
Short period of time
や否や => as soon as; the moment ~ N1