Photonics
[复]n.[用作单][物]光子学
🗣️ 情景例句
You could call it a community unity plan.
你可以称它为社区团结计划。
Govern your thoughts when alone, and your tongue when in company.
一人独处慎于思，与人相处慎于言。
Excuse me, are you American?
你是美国人吗？