Diazosulfide
苯并噻二唑
🗣️ 情景例句
Thank you.
谢谢。
Could you tell me where is the gas station?
你能不能告诉我加油站在哪里？
It's a very old castle. It is the oldest one in Britain.
这个城堡很古老，它是英国最老的了。