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
The more natural it will become.
它们就会变得越自然。
Choose an author as you choose a friend.
选书如择友。
I stopped and he asked me for a lift.
我把车停下，他向我提出要求搭车。