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
They rescheduled the product launch.
他们重定产品投放市场的时间表。
The greatest fool is he who worries about what he cannot help.
操心无法可想的事是最大的傻瓜。
Earlier, we were infants and young children, and consequently more vulnerable;
再早一些，我们是幼儿和小孩子，身体较脆弱；