抽象概念

Because the concept of course is abstract and it demands good space imagination, teaching is difficult.

该课程涉及概念比较抽象，对空间想象能力要求较高，教学难度较大。

Because the concept of field is abstract and it demands good space imagination, the students always feel it s difficult.

由于场的概念比较抽象，对学生空间想象力要求较高，学生普遍感觉本课程较难。

So far, there have been three typical concepts of space,which are space of the organism, space of perception and abstract space from lower to higher levels.

迄今为止，已经形成从低向高的三种类型的空间概念，即有机体空间、知觉空间和抽象空间。

It's only an abstract idea.

这仅仅是一个抽象的概念。

I can't understand the so abstract concept.

我无法理解如此抽象的概念。

It's the kind of abstraction that only exists when a seller wants a buyer to pay more.

这是一种抽象的概念，只存在于当卖家想让买家多付钱的时候。

Everything in the world dies, but we only know about it as a kind of abstraction.

万物皆有一死，但我们觉得死是一种抽象的概念。

It is worth observing that will is an abstraction.

我们要注意，意志是一个抽象的概念。

You are able to grasp ideas that others cannot even imagine, because you have an unusual ability to think abstractly.

你能够领会别人甚至无法想象的概念，因为你有着不同寻常的抽象思维能力。

If the data of a path can not been found in the abstractor definition, then it is not generalized and is pruned. The basic principal of hierarchy tree has two steps.

若某路径上对应的数据不能在概念层次树上找到更为抽象的定义，无法对该数据进行概化操作，则认为其是与挖掘任务关系不大的，执行剪枝操作。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。