Lactam
n. [化] 內酰胺, 乳胺
??? 情景例句
She was a wonderful woman. A real friend.
她是個很好的女人， 一個真正的朋友。
Falling leaves
落葉
It is bacteria that have generated the oxygen we breathe on earth.
正是細菌生產出我們在地球上呼吸的氧氣。