Lactonic
a. [化]内酯酸的, 无水氢氧酸类的
🗣️ 情景例句
It's my fault. I really feel bad about it.
是我的错。 我真的感到很难过。
Hope is a good breakfast, but a bad supper.
希望是美味的早点，但又是难咽的晚餐。
Though these large machines still exist, many of their functions have been taken over by small powerful personal computers, commonly known as PCs.
虽然这种大计算机仍然存在，但它们的许多功能已被体积小但功能齐全的个人电脑——即我们常说的PC机——所代替了。