Photoeffect
光电效应
🗣️ 情景例句
I'd like you to meet Audrey and her mother, Mrs. Cooper.
我来向你介绍， Audrey和她母亲 Cooper太太。
He went to grade school in New york and high school in Cicargo.
他在纽约上小学并在Cicargo上高中。
Which books did you buy?
您买的是两本什么书？