你是否曾经想过是谁发明了面包片?什么时候第一次出现四轮滑冰鞋?蓝色牛仔裤是怎样走进人们的生活的?即使是我们每天都要使用的最基本的东西,比如安全别针和罐装食物也是某人在某个时候发明的。假牙的发明可以追溯到罗马时代,然而其他东西,就像人造心脏和弹射座椅,大都是现代社会的产物。 Have you ever wondered who invented the slice of bread? When was the first time a four-wheeled skate appeared? How did blue jeans go into people’s lives? Even the most basic things we use every day, such as safety pins And canned food was also invented by someone sometime. The invention of dentures goes back to Roman times, but other things, like artificial hearts and ejection seats, are largely the product of modern society.