词典释义：
双语例句
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Its body which has a large rootlike holdfast a hollow stipe and branching blades with hollow gas bladders resembles that of higher plants.
它的主体部分有个大的根状固着器固着于海底、一个中空的柄以及有中空气囊的分支出去的叶片，很像是更高等的植物。