Dinaphthylmethane
二萘甲烷
🗣️ 情景例句
What's this for?
为什么要送我花？
Can you write in English?
你能用英文写文章吗？
When you have finished your experiment, please tidy the lab and put everything back in the cupboards.
做完实验后，请你们把实验室整理好，并把所有的东西放回器皿柜。