alternation
alternation
al.ter.na.tion AHD[ôl”t…r-n³“sh…n, ²l”-] DJ[7%8lt*6ne!.*n, 7#l-] KK[7%lt+6ne.*n, 7#l-]
n.(名词)
    Successive change from one thing or state to another and back again.
    交替:从一种事物或状态变为另一种事物或状态并再变回来的一系列变化