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小测验：选择正确的单词
- 论坛新贴
alder ['ɔ:ldə]
基本释义
- n. 赤杨
常用短语
- woolly alder aphid
赤杨绵蚜
- woolly alder aphid
参考例句
- Alder trees belong to the birch family.
赤杨属于桦木科。
- Alder trees belong to the birch family.
英英解释
2个名词解释
- wood of any of various alder trees; resistant to underwater rot; used for bridges etc
- north temperate shrubs or trees having toothed leaves and conelike fruit; bark is used in tanning and dyeing and the wood is rot-resistant
[同] alder, alder tree