Crotonylene
[化] 巴豆炔; 2-丁炔
🗣️ 情景例句
Grandpa! Grandpa!
爷爷！ 爷爷！
He is a fool who cannot be angry,but he is a wise man who will not.
不会发怒是蠢人，不愿发怒是聪明人。
She looked at it critically for a moment.
她认真的看了好一会儿。