(单词翻译:单击)
The Causes of World War I
第一次世界大战的起因
World War I began in 1914 when Archduke Franz Ferdinand of Austria-Hungary was assassinated by a Serbian nationalist.
第一次世界大战始于1914年，当时奥匈帝国的弗朗茨·斐迪南大公被一名塞尔维亚的民族主义者暗杀。
After this, Austria-Hungary declared war on Serbia.
此后，奥匈帝国向塞尔维亚宣战。
This conflict began to escalate because of the many alliances in Europe at the time.
由于当时欧洲存在许多联盟，这场冲突开始升级。
Germany supported Austria-Hungary in the conflict, and Russia sided with Serbia.
德国在冲突中支持奥匈帝国，俄罗斯站在塞尔维亚一边。
Russia was also part of a larger alliance known as the Triple Entente, which included France and Britain.
俄罗斯也和其它国家结盟，这个同盟被称为协约国，其中还包括法国和英国。
Eventually, more countries began to join the war.
最终，更多的国家开始加入战争。
This war was different from previous wars because of new technology such as machine guns, tanks, and airplanes.
这场战争与以往的战争不同，使用了机枪、坦克和飞机等新技术。
World War I lasted until November 1918, when both sides signed an armistice.
战争双方于1918年11月签署了停战协定，第一次世界大战结束。
