1. make flat or flatter;

   "flatten a road"
   "flatten your stomach with these exercises"
   

2. become flat or flatter;

   "The landscape flattened"
   

3. lower the pitch of (musical notes)

1.(使)变平;把…弄平
If youflatten something or if itflattens, it becomes flat or flatter.

e.g. He carefully flattened the wrappers and put them between the leaves of his book...
他小心翼翼地把包装纸弄平，夹在书页里。
e.g. The dog's ears flattened slightly as Cook spoke his name.
库克叫这只狗的名字时，它的耳朵就会稍稍耷拉一下。

2.摧毁，弄倒，夷平(建筑、城镇或植物)
Toflatten something such as a building, town, or plant means to destroy it by knocking it down or crushing it.

e.g. ...explosives capable of flattening a five-storey building.
能将一幢 5 层高的楼房夷为平地的炸药
e.g. ...bombing raids flattened much of the area.
空袭将这个地区的大部分都夷为了平地

3.使紧贴;使贴着(以免挡路或被看见)
If youflattenyourself against something, you press yourself flat against it, for example to avoid getting in the way or being seen.

e.g. He flattened himself against a brick wall as I passed.
他紧贴一面砖墙站着好让我通过。

4.揍倒;打倒
If youflatten someone, you make them fall over by hitting them violently.

e.g. 'I've never seen a womanflatten someone like that,' said a crew member. 'She knocked him out cold.'
“我从没见过一个女人那样把人打趴下，”一位机组人员说，“她把他完全打昏了。”

5.(在争斗、竞赛或辩论中)击败，打败，战胜
If youflatten someone in a fight, contest, or argument, you defeat them completely.

flatten

e.g. In the squash court his chief aim is toflatten me...
在壁球场上他的主要目标就是击败我。
e.g. A large percentage of these forces had been flattened by the assault.
这些部队大部分都已经在这次进攻中被击溃。

1. 变平：你想让用户调用强制转换为解决这个问题,但实际上还是产生了临时对象,把临时对象进行变平(flatten)操作后就丢掉了. 原来的圆,c,还是根本没有被修改过. 取而代之的是,如果你创建一个构造函数把圆形转换成椭圆,那么操作就很明确了:

2. 串行化：是串行化 (flatten) 和串行化 (serialize) 的同义词. 从串行化状态构建一个对象. 是反串行化 (marshal) 和反串行化 (resurrect) 的同义词. 在设计过程以及完成细节设计期间中所使用的一种构架机制. 它们与关联关系的分析机制有关,

3. 展平：包括:工具箱、色彩(Color)、色样(Swatch)和描边(Stroke)等* 掌握在Adobe InDesign中透明(Transparency)调板的使用* 掌握对某一对象应用透明的方法,包括:投影(Drop Shadow)、羽化(Feather)* 展平(flatten)透明对象以及展平样