に先立って => before; prior to ~ N2
手前 => considering; before; in front of; one’s standpoint N1
に[先立「さきだ」]って/に[先立「さきだ」]ち/に[先立「さきだ」]つ => Before A occurs/takes place N2
Time, Situation
のが上手 => to be good at doing something N5
のが下手 => to be bad at doing something N5
~と(が)相まって => combining / together with… N1
Attached
に相違ない => without a doubt; certain; sure N2
に[相違「そうい」]ない => No doubt N2
Information, Report
と[相「あい」]まって => Along with A N1
Lists, examples
に先駆けて => prior to; to be the first (pioneer); being ahead of ~ N1
に[先駆「さきが」]けて => The earliest, very first in A; Ahead of A, in advance of A N1
Time, Situation