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
but she sold us our first house and this one.
我们的第一栋房子和这一栋都是她卖的。
I would like to go to the employment agency for a job.
我要去职业介绍所找一份工作。
All at once, I noticed that my wife seemed to be filled with alarm.
突然，我注意到妻子十分惊恐。