英语词汇portholes的起源、历史背景-英语词源词典

词汇	portholes
词源	portholes. Half of a ship’s windows are on the starboard side. Yet all windows on a ship are called portholes. This is because in early times the only windows on a ship were the port holes for guns. When windows were later added for the comfort of sailors sleeping below, on both sides of a ship, they too were called portholes.
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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。