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
Rome wasn't built in a day.
冰冻三尺，非一日之寒。
The contract contains basically all we have agreed upon during our negotiations.
合同将我们达成协议的内容基本上都写上了。
at any rate for short periods -- that running, jumping and kicking a ball are tests of national virtue.
至少在短期内如此 -- 跑跑、跳跳、踢踢球是对一个民族品德素质的检验。