英语阅读：学会如何微笑，正确地微笑

微笑需要我们的心态上的放乐观，平时多宽容大度一点、用欣赏的姿态看人。给予他人微笑，会在不知意时候收获更多！
 
We all have our own idea of what the perfect smile should look like, whether we show a mouthful of pearly whites or keep our lips closed and turned up at the corners just so. New research suggests that there really is a proper way to smile, and it has everything to do with facial expression.
 
我们都有自己的想法，一个完美的笑容应该是什么样子，不管是露出你的大白牙齿，还是嘴角抬起，双唇上扬。一项新的研究表明，正确的微笑，这与面部表情有着密切的关系。
 
When we think of the perfect smile, we often envision a wide, beaming grin, with all of our teeth showing. However, Nathaniel Helwig and his colleagues at the University of Minnesota discovered that a genuine smile actually rests less on showing teeth and more on facial balance and symmetry .
 
当我们想到完美的微笑时，我们往往会想到一个露出所有牙齿的微笑。然而，明尼苏达大学的纳撒尼尔·赫尔维希和他的同事发现，真正的笑容实际上并不是露出几颗牙，而是更加均衡和对称的面部表情。
 
Researchers looked at 3D computer-animated facial models of more than 800 participants. The computer-animated facial models underwent a series of facial transformations, with researchers changing the mouth angle, amount of teeth shown, the extent of the smile, and how symmetrical the smile was. Participants were then asked to rate the models’ smiles based on effectiveness, genuineness, pleasantness, and perceived emotional intent.
 
研究人员着眼于800多位参与者的3D电脑动画面部模型。他们为这些模型做了一系列的面部转换，改变了这些模型嘴角的弧度、露出的牙齿的数量、微笑的程度以及微笑的对称度。然后参与者被要求基于有效性、真诚度、愉悦感以及所领会到的情感意图来为这些模型的微笑评分。
 
The results of the study found that the most successful smile—one that was rated most pleasant, genuine, and effective—had a perfect balance of teeth, an ideal mouth angle, and a smile length that extended to what was dubbed the “sweet spot.” Smiles that demonstrated a quick sync of the left and right side of the face during smiling were also more highly related.
 
研究发现，最成功的微笑，也就是说，被认为是最愉快和最真诚的微笑，最有效的，它显示了牙齿非常匀称衡，嘴角弧度完美和微笑的时间也被认为是“最好的”。面部两侧的动作同步也与微笑有关。
 

As Science Daily notes, smiling makes up a good portion of our nonverbal communication, making it important to have a grin that will draw people to you and also seem sincere. It’s also worth noting that perfect smile could help improve your health too.
 
《每日科学杂志》指出，微笑在我们的非言语交际中占有很高的比例，微笑会吸引人们来到你身边，还能使你显得真诚，它使微笑显得尤为重要。值得注意的是，一个完美的微笑还有助于改善你的健康。