nut sedge
nut-sedge的词性:n.(名词)
1. Either of two Old World sedges (Cyperus esculentus or C. rotundus) having aromatic tubers. 莎草,香附子:两种半球莎草(沙草属 油沙豆 或 香附子) ,有带香味的块茎
nut-sedge的词源:
2. [From the shape of the tubers] [由其块茎的形状得名]