Spectralite
光学玻璃
🗣️ 情景例句
But before I can publish your work,
但在我出版你的书之前
Respect yourself, or no one else will respect you.
君须自敬，人乃敬之。
New jobs are needed because a number of people are out of work.
因为许多人没有工作，所以需要为他们提供就业机会。