Pharosage
光通量密度, 照度
🗣️ 情景例句
How many do you want? I can probably get the owner to bring down the price.
你要几只？我大概可以找店主杀价！
Don't you have anything better to do?
你没别的事好做吗？
The petrol had nearly all been used up.
汽油几乎已经用光。