英语翻译下面的几句话我翻译不出来,:)1.basicbondmathsanalysisispresentedinslightlydifferentterms2.itisalsoreferredtoasadue-billoraletterrepo3.thecounterpartydesiresthiseconomicexposure,buttheTRswapenablesit

　　英语翻译

　　下面的几句话我翻译不出来,:)

　　1.basicbondmathsanalysisispresentedinslightlydifferentterms

　　2.itisalsoreferredtoasadue-billoraletterrepo

　　3.thecounterpartydesiresthiseconomicexposure,buttheTRswapenablesittoachievethiswithouttakingontheassociatedfinancingcost

　　4.ithasalsocontributedtotheincreaseincompetitionandthereductioninmarginsandbid-offerspreads.