Retaining ring
[机] 扣环
🧩 词语组成解析
n. 保留, 保持, 维持防护\\nv. 保持( retain的现在分词 ); 拦住; 保存; 止住
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
I understand
听说，
That's fine. What time do I have to be at the airport?
好的。我应该几时到达机场？
There was a murder in London yesterday.
昨天伦敦发生了一起谋杀案。