black alder
英
美
- alder n.[植]赤杨;桤木
- black adj.黑的;不加牛奶的;很脏的;愤怒的;令人沮丧的;邪恶的;阴沉的;机密的;黑色幽默的n.黑色;黑人;黑色物v.抵制;(使)变黑
- Alder trees belong to the birch family.
赤杨属于桦木科。
- The microorganisms involved in symbiosis with the alder tree are actinomycetes of the genus Frankia.
而与赤杨共生的微生物是放线菌。