に[伴「ともな」]って/に[伴「ともな」]う => When A changes, B changes with it. N2
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~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
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と[相「あい」]まって => Along with A N1
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