With the dollar slumping to a 26-year low against the pound, already-expensive London has become quite unaffordable.
主干：...London has become unaffordable.
这是个简单句，句首的with+宾语(the dollar)+宾补(slumping to...)作状语，表示原因。
译文：随着美元兑换英镑跌至26年来的最低，原本已经很昂贵的伦敦变得让人去不起了。
体坛英语资讯：Mexican striker dies of suspected heart attack
体坛英语资讯：Highway patrol statement on Woods car accident
体坛英语资讯：Massa participates in charity soccer game, talks about Mercedes
体坛英语资讯：Nadal to play Djokovic in Paris Masters semi-final
体坛英语资讯：Ronaldo returns but Real Madrid disappoints again
体坛英语资讯：Serena fined 175,000 dollars for U.S. Open outburst
体坛英语资讯：Phelps finishes 5th in 200m butterfly final
体坛英语资讯：Germany ties 2-2 with Cote dIvoire in soccer friendly
体坛英语资讯：F1 champion Button close to sign with McLaren: report
体坛英语资讯：Chinas Song wins womens discus at Asian championships
体坛英语资讯：James, Bryant named Players of the Week
体坛英语资讯：Gay and Richards given Jesse Owens award
体坛英语资讯：Man. United drop home record, Bayern revive hopes at Champions League
体坛英语资讯：Wallace, Duncan named NBA Players of Week
体坛英语资讯：Phelps second in 200m medley at Stockholm World Cup
体坛英语资讯：Barcelona takes huge step towards last 16 of Champions League
体坛英语资讯：Marquez becomes third Barcelona player with swine flu
体坛英语资讯：Barcelona prepares for key Champions League match
体坛英语资讯：Soderling stuns Nadal at ATP Finals debut
体坛英语资讯：Chinas Wang wins 1,000m at short track speedskating World Cup
体坛英语资讯：Knicks pull away in fourth, end Pacers 5-game win streak
体坛英语资讯：Jennings sustains top place in NBA rookie rankings
体坛英语资讯：Uruguay seize last World Cup ticket
体坛英语资讯：Nadal wraps up ATP Finals with third straight-set defeat
体坛英语资讯：Davydenko downs Del Potro to crown at ATP World Tour Finals
体坛英语资讯：England midfielder Lampard out of Brazil friendly for injury
体坛英语资讯：Federer defeats Murray to seal year-ending World No.1
体坛英语资讯：NBA great Abdul-Jabbars leukemia not life threatening
体坛英语资讯：Host favorite Murray wins first match at ATP World Tour Finals
体坛英语资讯：Cruyff: Barca thousands times better than Real