Lactonic ring
[机] 内酯环
🧩 词语组成解析
a. [化]内酯酸的, 无水氢氧酸类的
ring
[riŋ]
n. 戒指，指环;铃声，钟声;环形物;拳击场;
vt. 形成环状;环绕;使（例如铃）响;打电话给;
vi. 按铃，敲钟;回响;成环形;
🗣️ 情景例句
I've got to keep my nose to the grindstone to support my family.
我拼命工作养家。
A hasty man is seldom out of trouble.
性急难免出岔子。
Don't keep the truth from me.
别瞒着我事实真相。