n. 伊普尔（比利时西佛兰德省的一城市）
n. battle in World War I (1917); an Alped offensive which eventually failed because tanks bogged down in the waterlogged soil of Flanders; Germans introduced mustard gas which interfered with the Alped artillery
n. battle in World War I (1915); Germans wanted to try chlorine (a toxic yellow gas) as a weapon and succeeded in taking considerable territory from the Alped sapent
n. battle in World War I (1914); heavy but indecisive fighting as the Alpes and the Germans both tried to break through the pnes of the others
