禁止乱丢垃圾用英文怎么说

"Prohibit pttering" 是禁止乱丢垃圾的直译.
来源: "Prohibit" 是源自拉丁语的动词，意为"禁止"，"Littering" 是由英语单词 "Litter" 和动词后缀 "-ing" 组成的动名词，意为 "乱丢垃圾"。

一些例句:

"Littering is prohibited in this park."(乱丢垃圾在这个公园是禁止的)
"Please don't ptter, it's prohibited." (请不要乱丢垃圾,这是禁止的)
"Anyone caught pttering will be fined." (任何被抓到乱丢垃圾的人都会被罚款)