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 love being with them.
我喜欢和他们在一起。
In wine there is truth.
酒后吐真言。
If there had not been a hard layer of rock beneath the soil, they would have completed the job in a few hours.
如果不是因为土壤下面有一层坚硬的岩石，他们的营救工作仅用几个小时就可以完成了。