意向形 => volitional form​ N4
という意味だ => This means... N4
に先立って => before; prior to ~ N2
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
得る => can; to be able to; is possible to~ N2
得ない => unable to; cannot; it is not possible to ~ N2
Ability
に先駆けて => prior to; to be the first (pioneer); being ahead of ~ N1
ざるを得ない => cannot help (doing); have no choice but to ~ N2
~をきんじえない(~を禁じ得ない) => can't help but; can't refrain from ~ N1
ざるを[得「え」]ない => Only A is left to do/can be done N2
(Not)only, (Not) even
に[先駆「さきが」]けて => The earliest, very first in A; Ahead of A, in advance of A N1
Time, Situation
ように言う/頼む/注意する/伝える => to convey; to report; to transmit; to communicate; to tell; to impart; to propagate; to teach. N3