lead dust

例句：

1. 1. The workers wereexposed to lead dust while working on theconstruction site.
   工人们在建筑工地工作时暴露在铅尘中。
2. 2. The factory was ordered toclean up its lead dust and remove hazardous materials from the environment.
   工厂被命令清理铅尘，并从环境中移除危险物质。
3. 3. Lead dust can cause respiratory problems inhumans, so it's important towear protective gear when handling it.
   铅尘对人类呼吸系统有害，因此处理时需佩戴防护装备。