一些人认为这样比喻是有意的,即类似与容器(如背包与盒子)装有某些东西那样,集合含有他的元素。
Some people find it helpful to think of a set as analogous to a container (such as a bag or a box) containing certain objects, its elements.
一些人认为这样比喻是有意的,即类似与容器(如背包与盒子)装有某些东西那样,集合含有他的元素。
Some people find it helpful to think of a set as analogous to a container (such as a bag or a box) containing certain objects, its elements.
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