Optical flint
火石光学玻璃
🧩 词语组成解析
flint
[flint]
n. 燧石，火石;（打火机等的）打火石;
🗣️ 情景例句
I admire him for his success in business.
我佩服他事业有成。
This is a record player.
这是一台电唱机。
Here's your copy of the contract.
这是你的那一份契约。