Lactonic
a. [化]内酯酸的, 无水氢氧酸类的
🗣️ 情景例句
It's not fair, Richard. I'm not even ready.
这样不公平， Richard。我甚至一点准备都没有。
This mouse would be delicious.
这只老鼠似乎很是可口。
They had laboured for three years to produce this floating work of art;
瑞典人辛辛苦苦干了3年才建成这件水上艺术品，