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
Financial security, that's what it's all about.
家庭财政状况无忧，这就够了。
Did you watch the new office building being built?
你看过在建设中的新的办公楼吗？
The tunnel would be well-ventilated if tall chimneys were built above sea level.
隧道就具备了良好的通风条件。