Anhydro ring
[化] 酐环; 内酐环
🧩 词语组成解析
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
Nowadays more and more people are without jobs.
现在越来越多的人失业。
Diseases come on horseback, but go away on foot.
病来如山倒，病去如抽丝。
We are prepared to reconsider amending the contract.
我们可以重新考虑修改合同。