We can no longer expect to work to a static job description or follow a single career path.

我们不能再期望按照静态的工作描述或遵循单一的职业道路。

The simplest approach would just be to try every single path exhaustively and calculate the total cost of each.

最简单的方法就是详尽地尝试每条路径并计算每条路径的总成本。

How can we practically combine these two careers, these two lives, onto a single path that supports us both?

我们如何才能切实地将这两种职业、这两种生活结合到一条支持我们俩的道路上？

At this point the coast-line is entirely of chalk cliffs, which can only be descended by a single, long, tortuous path, which is steep and slippery.

此时的海岸线完全是白垩悬崖， 只能通过一条又长又曲折的小路下山， 这条小路又陡又滑。