Photonics
[复]n.[用作单][物]光子学
🗣️ 情景例句
What did I tell you?
我不是告诉过你吗？
My brother is a member of the faculty.He teaches economics.
我的兄弟是全体教员中的一员，他是教经济学的。
Once we get down to the oil, it usually flows to the surface because great pressure,
一旦到达油层，石油就会由于地下巨大的压力流到地面上来，