alder 核心词议：
n. 桤木
alder 基本解释
速记方法知识扩展
alder 变化形式
复数： alders
易混淆的单词： Alder
中文词源：
alder 桤木
来自PIE *el, 树名。
alder
精选例句常见考点例句：
- He gave john some alder bark .
- 他给了约翰一些桤木树皮。
- They studied how their ancestors pounded fern roots into flour , made snowberries into medicine and smoked salmon over alder wood fires .
- 他们学习了自己的祖先如何将蕨类植物的根捣成粉，将白浆果制成药物以及如何在燃烧的桤木火焰上熏制鲑鱼。
- A few scrubby trees , like red alder , have re-established themselves , and ants , frogs , meadowlarks , beavers and other species have moved in .
- 一些矮灌木丛，像红桤木很快又长起来了，蚂蚁青蛙草地鸬海狸还有其他一些物种也都迁进来了。
- An alder is reflected in the water
- 倒映在水下的一棵赤杨影像
- Mr alder declined to say when the guidelines would be out .
- 欧达礼拒绝透露指导方针何时出台。