每日听写1.17中级

Since then, numerous breeding initiatives have made chickens bigger and meatier, and allowed them to lay more eggs than ever. 
从那以后，很多饲养鸡变得又大又肥，能让它们生更多的鸡蛋。
Meanwhile, chicken production has shifted to an industrial, factory-like model, with birds raised in spaces with a footprint no larger than a sheet of paper. 
同时，鸡的生产转变为工业化、工厂式的模型，禽类在不超过一张纸大小的地方长大。 
And while there’s been a shift towards free-range farming due to animal rights and environmental concerns, most of the world’s more than 22 billion chickens today are factory farmed. 
同时，也有向散养农场的转变，这是出于对动物权利和环境的考虑，世界上绝大多数，超过220亿的鸡是工厂养的。 
From gladiators and gifts to the gods, to traveling companions and research subjects, chickens have played many roles over the centuries. 
从公开表演的决斗者和给上帝的礼物，到旅行伴侣和研究对象，鸡在历史中扮演了重要的角色。
And though they may not have come before the proverbial egg, chickens’fascinating history tells us a great deal about our own. 
尽管它可能比众所周知的蛋出现的更早，但鸡的迷人的历史也告诉了我们关于我们自己的历史。 
So what about chickens？
What we think about this？
Since we keep for sure one  another take a moment learn more about how animal s communicate and how its experience period.