Ring fluorination
[化] 环上氟代作用
🧩 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;
n. 氟化作用
🗣️ 情景例句
You always know the right thing to say.
你说话得体。
Least said, soonest mended.
多说反坏事。
After lunch Aunt Huang came in and she looked worried.
午饭后黄阿姨来了，她面带愁容。