【模仿句子】

But first Britain's economic standing has suffered a fresh blow in the wake of its decision to leave the European Union with two credit rating agencies downgrading its prospects. 

概况：由于预期“脱欧”将损害英国经济，国际信用评级机构标准普尔和惠誉２７日均下调英国主权信用评级，并同时将评级展望降为“负面”。