Sers
表面增强拉曼谱仪
🗣️ 情景例句
After he eats!
等他吃饱了！
Kinsman helps kinsman,but woe to him that hath nothing.
亲人帮亲人，无亲来帮愁煞人。
Excuse me! Is this your pencil-box?
请问，这是你的铅笔盒吗？