Sers
表面增强拉曼谱仪
🗣️ 情景例句
It's just over yonder.
他的房子就在那边。
He has a pair of shoes.
他有一双鞋。
It was warm last Sunday, so I went and sat on the river bank as usual.
上星期日天气很暖和。于是我和往常一样，又去河边坐着。