Spectroquality
光谱纯度
🗣️ 情景例句
Why shouldn't I run?
为什么我不该竞选？
His heart swelled with gratitude to her.
他心中充满着对她的感激之情。
Will you please sweep the floor and tidy the classroom every day?
请你们每天都打扫地板、整理教室，好吗？