Chromometry
比色法
🗣️ 情景例句
I know. I heard you talking about it
我知道。我听到你们谈论的那件事了，
If we had been more careful, we would be getting much better results now.
如果我们更为细心的话，成绩会更好。
Do you have an account with us?
你在我们公司有没有记帐户头？