求翻译：交易双方约定在未来某一期限相互交换各自持有的资产或现金流的交易形式。较为常见的是外汇掉期交易和利率掉期交易，多被用作避险和投机的目的是什么意思？

Both parties agreed to exchange their respective holdings of assets or cash flow transaction form at a certain period in the future. The more common, foreign exchange swaps and interest rate swaps, and more are used for hedging and speculative purposes

Both parties to the transaction at a future time period held each other their respective exchange of assets or cash flow of transaction. More common are foreign exchange swaps and interest rate swap transactions, and many have been used as hedging and speculative purposes

The transaction form which transaction both sides agree which will exchange mutually in future some deadline respectively has the property or the cash flow.More common is the foreign exchange falls the time transaction and the interest rate falls the time transaction, many serves as takes refuge fro

Parties agree a period of mutual exchange in the future holding assets or cash flows of the transaction form. More common is the currency swaps and interest rate swaps, is used as a hedge and speculative purposes

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