英语词汇u-boat的起源、历史背景-英语词源词典

词汇	u-boat
词源	U-boat. The German unterseeboot, “undersea boat,” gives us this universal abbreviation, which became popular during World War I.
随便看	trail of tears train tramp tranquilizer transatlantic transitional sentence trap war trash trashing travelogue trdjsdopii treacle bill treasure state tree tree-hugger tree of heaven tree of sadness tref trek trembling poplar triangle of death triangular trade tribulation tribulations tricky dick

英语词源词典收录了13259条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。