So it could improve the decision usefulness of accounting information to measure the trading securities and available for sale securities by fair value which can be measured reliably.

因此对于公允价值信息可靠性较高的交易性金融资产和可供出售金融资产，采用公允价值计量能够提高会计信息的决策相关性。

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However, agencies may recognize market adjustments on bills, notes, bonds, and zero coupon bond securities classified as available-for-sale.

WHITEHOUSE: M-03-01, Business Rules for Intragovernmental Transactions, Attachment B | The White House