讲解
Today's key word is Pants
Pants 裤子
Pants are a piece of clothing that cover the lower part of your body and each leg. 美式英语中的裤子，跟trousers的意思一样，但在英式英语中也指内裤，所以跟英国人说裤子的时候要小心误会哦。

Here is an example:
He was wearing a pair of short pants and a T-shirt.
他当时穿着一条短裤和一件T恤。

And what are you wearing now?A pair of black pants or blue jeans maybe?有没有想过不穿裤子，只穿内裤出门是个什么赶脚？想试试的同学，你的机会来了。

Each year in January, there is a day called “No pants day”. On “No pants day”, there will be lots of peopleriding the subway without wearing their pants. The mission started as a small prank（恶作剧） with seven guysin New York.有一天，7个男孩儿突发奇想，决定不穿裤子去坐地铁看看人们的反应。本以为会被朝阳群众举报，没想到！！！反而大受欢迎。

Now it has grown into an international celebration of silliness（蠢萌）, with dozens of cities around the worldparticipating(参加) each year. 在这个普天同庆的日子里，不论男女老少，去坐地铁的时候不穿裤子，而且一定要站在地铁里面像什么事情都没有发生过一样，不会被当成变态。The participants behave as if they do not know each other,andthey all wear winter coats, hats, scarves(围巾), and gloves（手套）. The only unusual（不寻常） thing is theirlack of pants. But, but, 内裤还是一定要穿的。你有没有兴趣尝试一下啊？