13个你可能不知道的生命真相
You spend about 23 years sleeping in a 70 year life.在70年的生命中，你大约要花23年的时间睡觉。
Owls are the only birds that can see the colour blue.
猫头鹰是唯一能看见蓝色的鸟类。
Your stomach has to produce a new layer of mucus every two weeks otherwise it will digest itself.
为了防止把自己消化掉，你的胃不得不每隔两周就造出一层新的粘膜。
People will say "Bless you" when you sneeze because your heart stops for a millisecond.
当你打喷嚏时，人们会说“上帝保佑你”，那是因为你的心脏停跳了一毫秒。
All polar bears are left-handed.
所有的北极熊都是左撇子。
A cat has 32 muscles in each ear.
猫的每只耳朵上有32块肌肉。
Pigs can become alcoholic.
猪有变成酒鬼的能力。
Bats use ultrasound to pick up vibrations from their prey.
蝙蝠用超声波识别猎物发出的震动。
Butterflies taste with their feet.
蝴蝶用脚品尝味道。
An average head has between 100,000-150,000 hairs.
人们头上通常有10万到15万根头发。
In our solar system, the earth is the lucky planet that has the right temperature to recycle water.
在太阳系中地球是个幸运的星球，因为它有适宜的温度可以使水再循环。
Nails grow at 3mm per month.
指甲每个月会长3毫米。
Hair on your head grows at 10-13mm per month.
你的头发每个月会长10至13毫米。
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