煤炭的真实成本必须既考虑其即时价值,也考虑其对社区和生态系统的长期影响。
所以从前的贤君按照农事来生财,巩固根本并节约用度,财务自然就丰足了。
Understanding the computational complexity of learning problems is essential for developing efficient algorithms.
Whatever you're meant to do, do it now. The conditions are always impossible.