求翻译：跟单托收是指委托人签发的金融单据中附有商业单据或不附有金融单据的商业单据的托收是什么意思？

Documentary collection is the principal issue of financial documents accompanied by commercial documents or not accompanied by the collection of financial documents, commercial documents

With a single collection is issued by the principal financial documentation can be found in commercial documents or are not accompanied by financial documentation of commercial documents of the collection

The documentary collection is refers to in the financial documentary evidence which the trustee signs and issues to attach the commercial documentary evidence or not to attach financial documentary evidence commercial documentary evidence commissioning to collect on own behalf

Documentary collection is issued by the seller's financial documents are accompanied by a commercial document or not accompanied by the financial documentary evidence commercial documentary evidence commissioning to

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