Ring opening
[化] 开环作用
🧩 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;
opening
['opənɪŋ]
n. 开幕，开始;空缺的职位;[商]开盘，交易开始时间;（职位的）空缺;
adj. 首次的，开始的;
v. （打）开( open的现在分词);开始;睁开;启动;
open 开；开始+ ing 名词后缀 → 开始的\r\n
🗣️ 情景例句
Ask him to stop by for a talk.
让他过来坐坐，聊聊天。
You can count on us.
你可以信赖我们。
She had told him to come straight in if ever she failed to open the door and to leave the bread on the kitchen table.
她曾告诉过面包师，如果她不去开门，他可直接进门，把面包放在厨房的桌上。