Dìyī cì Shìjiè Dàzhàn qījiān / xiéyuēguó / yǔ / tóngméngguó / zài / Ōuzhōu / zhǎnkāi / le / chángqī / zhànzhēng

第一次世界大战期间，协约国与同盟国在欧洲展开了长期战争。

During World War I, the Allied Powers and the Central Powers fought a prolonged war in Europe.