EMS Online acts as a holding manager of letters of credit or cash deposits against possible nonpayment by customers or the failure to deliver network by carriers.是什么意思_EMS Online acts as a holding manager of letters of credit or cash deposits against possible nonpayment by customers or the failure to deliver network by carriers.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句