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
He is not very interesting to talk to.
跟他谈话没味道。
Is that girl a student?
那个女孩是学生吗？
I suggest that you did not catch the 8 o'clock train,
您乘的不是8点钟的火车，