我刚看了d.e.新电影，超好看！

I just watched ___D.E.'s new movie, it was awesome!

我们在数学课上学习了如何解微分方程。

We learned how to solve ___D.E. in our math class.

这辆车的车牌上有d.e.标识，说明它来自德国。

The license plate has ___d.e. on it, meaning the car is from Germany.