letter of undertaking是什么意思

letter of undertaking是什么意思 英语翻译Undertaking of ConfidentialityThis Undertaking of Confid payment undertaking是什么意思 英语翻译a letter of credit is an undertaking issued by a bank fo letter of notice是什么意思 letter of interest是什么意思 letter of engagement是什么意思 letter of guarantee是什么意思 letter of explanation是什么意思 letter of transmittal是什么意思 letter of credit是什么意思 letter of authorization是什么意思