black alder

black-alder的词性：
n.（名词）

1. A deciduous shrub or small tree (Ilex verticillata), the most widespread of North American hollies, growing in many variable forms from Minnesota to Texas and Georgia. Also called winterberry
轮生冬青：一种落叶灌木或小树（轮生冬青 冬青属） ，北美冬青属植物分布最广的一种，从明尼苏达到得克萨斯和佐治亚以不同形式生长 也作 winterberry

2. A Eurasian alder tree (Alnus glutinosa) that is sometimes cultivated in North America, especially for its ability to grow in soils too wet for many other trees.
黑桤木：一种欧亚产桤树（欧洲桤木 桤木属） 有时在北美种植，尤其因为该树具有能在对于许多其他树来说过于湿润的土壤中生长的能力