Ring closure
[化] 闭环作用
🧩 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;
closure
['kləuʒə]
n. （永久的）停业，关闭;结束;[电]闭合;[数]闭包;
vt. 使结束，使终止;使停止辩论;
🗣️ 情景例句
Richard told us all about you.
Richard跟我们谈起你 。
Do I need a reservation for the dining car?
我需要预订餐车吗？
After I had sat down, he said that business was very bad.
待我坐下后，他说生意非常不景气。