Cosmene
[化] 波斯菊萜; 2,6-二甲-1,3,5,7-辛四烯
🗣️ 情景例句
I have a suggestion for you ...
我有一个建议……
The chemist discovered a new synthetic material.
化学家发现了新的复合物质。
Good morning, nurse.I was to see the dentist,please.
早上好，护士。我想见牙科医生。