英语语法分析

So, starting back with the photoelectric effect -- yes.

好了，开始光电效应的话题，好。

We are professional exporter of photoelectric lighting products.

我们是专业的光电照明产品出口商。

"This is a nice extension of Einstein's photoelectric effect," Richter said.

“这是爱因斯坦光电效应的一个很好的延伸，”Richter说。