英语词汇seaweed的起源、历史背景-英语词源词典

词汇	seaweed
词源	seaweed. Seaweed takes its name from Old English sae, “sea,” and weod, “weed.” It is generally divided into four groups: blue- green, green, brown, and red, with about 10,000 species in all. Kelps growing along the Pacific coast are the largest and most commercially important of the brown seaweeds, many growing to more than 100 feet long and the giant kelp (Macro cystis py- rifera) growing over 150 feet.
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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。