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
for a new member of the Stewart family.
给Stewart家的新成员了。
No road is long with good company.
途有好伴，不觉路远。
He called out to the children and threw the ball back to the bank.
他大声叫着那些孩子，把球扔回到岸上。