Luminous efficiency
[化] 光视效率; 光视效能
🧩 词语组成解析
🗣️ 情景例句
You had better study hard.
你最好努力学习。
The young man had been well aware of her presence at the party.
那个年轻人早已注意到她在宴会上。
Her eyes were fixed on her plate and in a short time, she was busy eating.
她的眼睛盯着自己的盘子，不一会儿就忙着吃起来了。