他松开腰带，裤子掉下去。

He dropped his pants.

《牛津词典》

泰德，你是不是拉在裤子里了？

Ted, did you poop in your pants?

《柯林斯英汉双解大词典》

我的裤子要短一点。

I want the pants shorter.

youdao

My canvas bag had torn cottonfield pants and the tattered remnants of my huarache shoes in it.

我的帆布包里还有两条破烂的裤子,和破旧的革条帮平底凉鞋。

耶鲁公开课 - 1945年后的美国小说课程节选

They have these things called tiger tails which you like, tie onto your pants and it's like "I'm a little tiger."

他们有这些被称作“老虎尾巴”的东西，当你把它系到你的裤子上，你自己就仿佛是只“小老虎”。

我们是普林斯顿家族 - SpeakingMax英语口语达人

So, you have parts of your brain that are basically telling you now, largely in the frontal lobes, that are--"Okay. Keep your pants on.

现在在你的大脑中,会有脑组织告诉你,主要是额叶,"好了,穿好裤子

耶鲁公开课 - 心理学导论课程节选