However, if they use up all points already accrued before transferring to the Frequent Traveller Option, no Upgrade Fee will be charged.是什么意思_However, if they use up all points already accrued before transferring to the Frequent Traveller Option, no Upgrade Fee will be charged.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句