Lactones
(lactone 的复数) n.[化] 内酯
🗣️ 情景例句
I'm sure Alexandra
我相信Alexandra
Care and diligence bring luck.
谨慎和勤奋，带来好运气。
He was just falling asleep when there was a loud knock at the door.
他刚要入睡，就有人很响地敲门。