Grasp a typical example and you will grasp the whole category.; to reason by analogy; to single out one thing and bring out its interrelationships; to draw parallels from its inference
提高高旁通飞机引擎的方法之一就是把风扇变成开放式旋翼，有点回归于螺旋桨的味道，但要使用两圈粗短的反旋桨叶。
One way to increase the efficiency of a high-bypass jet engine is to turn the fan into an open rotor, a bit like returning to propellers, but using two rings of stubby counter-rotating blades.
如果懂得这点，其它的就可以触类旁通了。
If you understand this point, you can understand the rest by analogy.
然而绘画与音乐在某种程度上又是触类旁通的。
However, painting and music to some extent can also be comprehended similarly.
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