Boston fern ![添加此单词到默认生词本](http://www.dict.li/user/images/new_vocabulary.gif)
波士顿蕨
- any of several tropical ferns having more or less sword-shaped fronds including one from which the Boston fern developed.
具有剑形复叶的热带蕨类,包括从波士顿蕨演变来的分支。
boston fern[ noun ]
a sword fern with arching or drooping pinnate fronds; a popular houseplant
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