Isophotometer
[光]等光度线记录仪
🗣️ 情景例句
Don't stand on ceremony, make yourself at home.
别客气，随便吃。
Drop me a line.
写封信给我
I think we should do that another day. Then we can leave early in the morning before it gets too hot.
我想我们还是改天再去游览高坝吧。那样我们可以一清早就动身，免得天气太热。