Polycyclic ring
[化] 多核环
🧩 词语组成解析
a. 多环的\\n[医] 多环的
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
and having lunch with you today.
与你一起吃中餐。
Thank you for inviting us; we had a wonderful time.
谢谢您的邀请，使我们过得很快乐。
He drives more carefully than you.
他开车比你小心。