Spectrodensitometer
光密度计
🗣️ 情景例句
There's so many things to talk about.
有许多事情需要讨论。
The mills of God grind slowly but sure.
天网恢恢，疏而不漏。
Our climate is not very good,but it's certainly interesting.
虽然我们国家的气候并不很好，但又确实很有意思。