Photicity
光化率
🗣️ 情景例句
I suppose you want to apply to Columbia.
我猜想你会申请Columbia大学。
He knows best what good is that has endured evil.
忍过痛受过苦，最知幸福是何物。
It's Jim. He's in that tree. He can't get down. Can you help him?
是吉姆，他在树上，下不来了，你能帮他吗？