O ring
un. O形环；圆形截面密封圈\\n
🧩 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;
🗣️ 情景例句
Please give him the message.
请转告他。
Do you have an extension?
你有分机吗？
but as a special favour, he would let me have it for $30.
作为特别优惠，他愿意让我出30英镑成交。