1.七倍(的);七的
1.以七倍之;用七乘;使变成七倍
1.seven times as many or as much as something else
2.consisting of seven parts
1.to multiply something by seven, or become seven times as much or as many
1.Two months later, the number of Facebook users in China septupled.
两个月后,Facebook的中国用户翻了7倍。