bracken fern的用法和樣例：
例句
- Native products have black fungus, white melon seeds, such as bracken.
土特產(chǎn)品有黑木耳，白瓜子，蕨菜等。 - The nutritional value and use of bracken were introduced, and the processing and artificial plant technology were also expounded.
摘要介紹了蕨菜的營(yíng)養價(jià)值和用途，并重點(diǎn)闡述了蕨菜的加工技術(shù)和人工引栽技術(shù)。
