best combination短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 最佳组合 But if ends change in the course of an action, the concept of efficiency—which can only be defined as the best combination of means in pursuit of given ends— again becomes meaningless. 既然效率的概念只能被定义为追求目的的最佳手段，但如果目的会在行动过程中改变，那么效率再一次变得毫无意义。 blog.sina.com.cn