Upon ( ) for further information or specified quotation.填一单词并译中.

Upon ( ) for further information or specified quotation.填一单词并译中.
Upon ( ) for further information or specified quotation.
填一单词并译中.

Upon ( ) for further information or specified quotation.填一单词并译中.
request
Upon request for further information or specified quotation.
在对方要求下提供进一步的信息或者确切的报价
一般是 Upon someone's request这个短语.
例如：I can send you samples upon your request.