就其本身而言，它是一种极其复杂的工具，但却基于一种巧妙而简单的理念。
In its own right it is a tool of extraordinary sophistication, yet based on an idea of ingenious simplicity.
一个理念或者定义是一种概念，而不是一种感知。
“趋于一种饮食”而减肥的理念意味着你最终又会偏离这种饮食而回到以往的饮食习惯。
The idea of "going on a diet" to lose weight implies that eventually, you will "go off" the diet and return to your old eating habits.
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