Triptycene
[化] 三蝶烯
🗣️ 情景例句
Could I trouble you with something for a moment please?
请问可以麻烦你一下吗？
What's your nationality?Are you a Chinese?
你的国籍是什么？你是中国人?
In five working days, if we ship by air.
如果空运的话，五个工作天内可以到。