Alder reaction
[化] 艾勒德反应(即双烯合成)
🧩 词语组成解析
alder
['ɔ:ldə]
n. 桤木;
🗣️ 情景例句
OK, a movie. Six words.
好， 一部电影。六个字。
How did you recognize him?
你是如何认识他的？
When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed.
不久前，一架轻型客机偏离了航线，在山区坠毁，飞行员丧生。