litterbug

例句：

1. 1.The city government is cracking down on litterbugs who leave their trash on the streets.
   市政府正在打击那些在街道上留下垃圾的乱扔者。
2. 2. The children were punished for littering, which was a serious offense in this area.
   孩子们因为乱扔垃圾被惩罚了，这在该地区是一个严重的罪行。
3. 3. The litterbug problem is getting worse, and it's affecting the environment.
   乱扔垃圾的问题越来越严重，对环境产生了影响。