Acetylpyrazine
乙酰吡嗪
??? 情景例句
When you're out in the fresh air like this, it makes you hungry.
當你來外面呼吸這么新鮮的空氣時， 就很容易餓。
I understand completely.
我完全理解。
Today Ellis Island is a museum, showing the roots of America's new citizens, who came from all the corners of the earth.
今天，埃利斯島成了一座博物館，展示著來自世界各地的美國新公民的根源。