片语
poisonous substance removal消除有毒物质
harmful poisonous substance有害毒物
soil poisonous substance土壤有害物质
Hazardous or Poisonous Substance有害性或毒性物质
poisonous s substance有毒物质
toxicant有毒的
toxic substance有毒物
specified poisonous substance特定毒物
low-poisonous substance低毒类物质
specific poisonous substance特定毒物
Poisonous and harmful substance有毒和有害物质