a war between the allies (Russia, France, British Empire, Italy, United States, Japan, Rumania, Serbia, Belgium, Greece, Portugal, Montenegro) and the Central Powers (Germany, Austria-Hungary, Turkey, Bulgaria) from 1914 to 1918
例句
用作名词 (n.)
Britain was an ally of America in the World War I. 英国在第一次世界大战中是美国的同盟国。
Our history books only go up to the World War I. 我们的历史教科书只叙述到第一次世界大战。
美
