Piston ring
[化] 活塞环; 涨圈
📖 牛津释义
piston ring
split metal ring that fits into a groove on the rim of a piston to make a gas-tight seal 活塞环.
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
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
If you had to describe the book in one sentence,
假如要你用一句话来描述这本书，
This month all of my law clients paid their bills.
这个月前来做法律咨询的客户全都付清账单了。
I'm afraid I don't have it any more. I sold it last week.
我恐怕是没有了，上星期我把它卖掉了。