Injection piston
[化] 注射柱塞
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
🗣️ 情景例句
Keith and I are through.
基思和我已经不再来往了。
Now that I've seen how he lives, I know why he needs so much money.
看过了他的生活状态，我现在才知道他为什么需要那么多钱。
As I was looking for it, the landlord came in.
当我正在寻找时，酒店老板走了进来。