Pyrazine
吡嗪, 对二氮杂苯, 胡椒嗪
🗣️ 情景例句
And my friend Alexandra is going back to Greece ...
我的朋友Alexandra就要回希腊去了……
Could you tell me where is the exit?
你能不是告诉我出口在哪里？
We couldn't get across the river.
我们过不了河。