が必要 => need; necessary N4
[後「あと」]で => After V1, V2 N5
Time
必要がある => Need/Need to N4
手前 => considering; before; in front of; one’s standpoint N1
のが上手 => to be good at doing something N5
のが下手 => to be bad at doing something N5
〜がさいご(が最後) => if you do... negative result N1
Decisive (resolute decision)
たが[最後「さいご」] => Once A occurs, B happens N1
Information, Report
必ずしも~とは限らない => Not necessarily; not always N3
[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements