After the unification of Germany, the changes of the European Powers construction became the background of Bismarck's alliance system.
德国统一后，欧洲强权结构的变化是俾斯麦同盟体系成立的历史背景。
BACKGROUND a large outbreak of the hemolytic-uremic syndrome caused by Shiga-toxin-producing Escherichia coli O104: H4 occurred in Germany in May 2011.
背景2011年5月在德国发生了一次由产志贺毒素大肠杆菌o 104：H4引起的溶血性尿毒症综合征的大暴发流行。
BACKGROUND a large outbreak of the hemolytic-uremic syndrome caused by Shiga-toxin-producing Escherichia coli O104: H4 occurred in Germany in May 2011.
背景2011年5月在德国发生了一次由产志贺毒素大肠杆菌o 104：H4引起的溶血性尿毒症综合征的大暴发流行。
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