求翻译：而最近欧洲债务危机的愈演愈烈， 欧洲主权债券的毒效向金融机构蔓延。倾注了大量赌注的MF Global在录得有史以来最大的季度亏损的同时，又被评级公司连降两级至垃圾级，耗尽其银行信贷额度，MF Global陷入泥淖。是什么意思？

The recent European debt crisis intensified, the European sovereign bond spread to financial institutions of toxic effects. Devoted a great deal of mf global stakes in the largest ever recorded quarterly losses at the same time, has been a fall of two rating to junk status, exhausted its bank credit

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And more recently the European debt crisis intensified, spreading toxic effects to the financial institutions of the European sovereign bonds. Devoted a lot of bets MF Global largest quarterly loss ever recorded at the same time, have been rating us drop two levels to junk level, drain their bank cr