Alder
[ 'ɔ:ldə ]
第4级
其它 Other
n. 桤木;
📝 例句
Modification for synthetic purposes on the Diels - Alder adducts 56 and 62 has only rarely been considered.
为了达到合成的目的,对Diels-Alder加 成物(56)和(62)加以改造的问题很少有人考虑.
📖 牛津释义
alder
n
tree of the birch family, usu growing in marshy places 桤木（桦木科, 通常生长於沼泽地带）.
📖 同为「TOEFL」词汇
查看全部TOEFL词汇 ›🗣️ 情景例句
It all happened so quickly!
这一切发生得太快了！
He has a pair of shoes.
他有一双鞋。
that if we escape wars, accidents and diseases we shall eventually 'die of old age',
既使我们能避开战争、意外的事故和各种疾病，我们最终也会"老死；