禁止形 => Negative imperative form N4
[禁止「きんし」] => Don't do N4
Can, Should, Must
再び => again; once more N2
間 => while; during; between ~ N4
瞬間 => At the very moment N3
Short period of time
間に => while; during~ something happened N4
[間「あいだ」]/[間「あいだ」]に => During A, During A (before A is finished/over) N2
Time, Situation
~をきんじえない(~を禁じ得ない) => can't help but; can't refrain from ~ N1
~ といっても間違いない => although I say; although one might say ~ it doesn't matter ... N1
Explain
を[禁「きん」]じ[得「え」]ない => Can't help but do A, can't hold back from A (emotional response to something) N1
Will, Decision, Doing