科学家进行的一项研究为农民提供了一种聪明而简便的方法,使他们的奶牛生产更多的牛奶:他们所要做的就是对奶牛们更专心,宠爱它们,并更频繁地用名字称呼它们。研究人员认为,有名字和名字被叫到的母牛会感到更加放松,而压力荷尔蒙会减少牛奶的产量。
9
One pencil can draw a 56 km line.
一支铅笔可以画一条56千米的线。
A 35-mile line can be drawn with an average pencil (a bit more than 56 km) or it can write 45,000 words.
一支普通铅笔(超过56公里)可以画一条35英里的线,或者可以写45,000个字。
10. 2,500 years ago, in China, people used knives as money.
在2500年前的中国,人们用刀当钱。
Bronze knives played the role of money in the territory of China between 600 and 200 years BC, during the reign of the Zhou dynasty.
在周朝统治期间,青铜刀在公元前600至200年的中国领土上发挥了货币的作用。
10
Thanks to flat screens and high resolution, dogs can watch TV just like humans.
由于纯平屏幕和高分辨率,狗可以像人类一样看电视。
The picture on a standard TV screen is updated 60 times per second. For the human eye, pictures that appear faster than 50 HZ are seen as continuous motion. And dogs see separate pictures at 75 HZ, because their eyes are designed to react to motion. This is why the video on the screen is probably seen by dogs as separate pictures: the animals most likely see this motion as unrealistic, so they are not interested in it. But modern technology allows us to make high-res screens: this video doesn’t seem to be unrealistic to our pets and seems to hold their interest.
【你知道吗?自拍的致死率比鲨鱼还要高……】相关文章:
最新
2020-09-15
2020-09-15
2020-09-15
2020-09-15
2020-09-15
2020-09-15