So the first thing you do is your write down your differential equations.

所以你要做的第一件事是你写下，你的微分方程。

youdao

So you can write down immediately the solution to this differential equation.

因此可以马上写下，这个微分方程的，解法。

youdao

The cost differential between fossil-fuel-generated energy and some alternatives is already small, and is likely to come down.

化石燃料产能同某些替代途径产能在成本上的差距已经很小，而且可能会继续缩短。

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