n.brown algae with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea
同义词：sargassumsargassoSargassum bacciferum
英汉双解大词典
gulfweed/ˈɡʌlfˌwiːd/
1.
N（名词）
any brown seaweed of the genus Sargassum, esp S. bacciferum, having air bladders and forming dense floating masses in tropical Atlantic waters, esp the Gulf Stream (果囊)马尾藻 (Also called sargasso, sargasso weed)