The zipper was invented long ago.
拉链这东西，可是很久以前发明的。
It first appeared in 1893.
它最早出现在1893年。
At first, it was called a slide fastener.
一开始，它有个笨笨的名字叫滑动扣件。
People put it on boots, not on coats.
人们先把它装在靴子上，没往衣服上想。
Later, it moved onto jackets and trousers.
后来，它才跑到夹克和裤子上安家。
Today, zippers are on bags and tents too.
现在拉链到处都是，包上、帐篷上都有。
