相关单词近義詞 prolongation 延長, perpetuation 永存, protraction 延伸臨近詞lengthen, lengthened reamer, lengthen one's life, lengthening culvert, lengthened coupling, lengthening mascara, lengthening spindle, lengthened off time, Lengthening of femur, lengthening reaction, Lengthening of Penis 返回 lengthening