71.attachto tie,connect;fasten Thevirusreplicatesbyattachingtoacellandinjectingitsnucleicacid. Wehavetocoverourselvesupsothatbabycraneswillnotbecomeattachedtous. 72.attributesthtosb considerasresultingfrom,properto,orbelongingtoapersonorthing Soldiersrarelyholdtheidealsthatmoviesattributetothem,nordoordinarycitizensdevotetheirlivestounselfishserviceofhumanity. 73.backandforth MostlyIlljustbeusingthebiketogetmebackandforthfromwork. 74.backup Tocausetoaccumulateorundergoaccumulation使聚集引起堆积或经过积累 Theaccidentbackedthetrafficupforblocks.Trafficbackedupinthetunnel. 事故引起了交通阻塞。在地下道中引起了交通阻塞. 75.beshort W:Ifoundtheperfectbookbag,butIamabout20dollarsshort. 76.beabsolvedinsth 沉浸 Ispentthewholeweekendtotallyabsolvedinthisbiography. 77.beaccessibletosb Easilyapproachedorentered Thenationalparkisaccessibletoeveryone. 78.beaccountabletosb 负责 Powerfulrailroadbaronsmadefortuneswithouthavingtobeaccountabletothepublicorconsiderateofcustomers. 79.beaccustomedto Tofamiliarize,asbyconstantpractice,use,orhabit Ihaveaccustomedmyselftoworkinglonghours. 80.beadaptedto Bloodhoundsarebiologicallyadaptedtotrailingtheirprey. 81.beadeptat begoodat Crowsareadeptatavoidingresearchers. 82.beallergictosth Havingadislike;averse Danisallergictocats. 83.bearound 在附近 M:IsSallystillaround?Iwasgoingtoaskherifshewantedtowalktoclasswithme. 84.beassociatedwith 与相联系 Theprocessisassociatedwiththeformationandmelting融化ofseaice. 85.beatrisk Painsaresuresignthatyourhearingisatrisk.