Solid piston
[化] 实心活塞
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
🗣️ 情景例句
I have been exposed to languages such as English, Spanish, and French.
我接触过英语、西班牙语和法语。
Do you usually do arithmetic on Sunday?
你通常在星期日做算术吗？
Right, I'll make a note of that.
没错，我把它记下来。