Derivator
[計(jì)] 微分器
??? 情景例句
I keep thinking about the dog -- about Gemma,
我一直在想那只狗 Gemma，
Is that right?
那樣對(duì)嗎？
That's right.we have to work out the final price.
是的，我們得把最后的價(jià)格敲定。