Ferromagnon
铁磁振子, 铁磁自旋波
🗣️ 情景例句
Would a professional photographer be without a picture?
一位专业摄影师会没有照片吗？
His heart swelled with gratitude to her.
他心中充满着对她的感激之情。
Hi! Where are you from?Hi
，你是哪里的？