Dieneanalogues
[化] 二烯同型物(含杂原子的二烯类)
🗣️ 情景例句
My favorite hobby is coin collecting.
我最大的爱好是收集硬币。
Confidence of success is almost success.
对成功抱有信心，就近乎成功。
Are these English books?
这些是英语书吗？