Ketine
[化] 2,5-二甲基吡嗪
🗣️ 情景例句
What was your graduation thesis on?
你毕业论文是什么题目？
Rivers need a spring.
大河要有源头。
Do you think our manager is going to have a new factory built?
你认为咱们经理会打算建造一家新工厂吗？