Today we know that the traces he found do not lead back to a social stage of promiscuous sexual intercourse, but to a much later form -- namely, group marriage.是什么意思_Today we know that the traces he found do not lead back to a social stage of promiscuous sexual intercourse, but to a much later form -- namely, group marriage.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句