arsenic trioxide
柯林斯词典
1. N a white poisonous powder used in the manufacture of glass and as an insecticide, rat poison, and weedkiller. Formula: As2O3 三氧化二砷; 砒霜 (Also called arsenic)
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1. N a white poisonous powder used in the manufacture of glass and as an insecticide, rat poison, and weedkiller. Formula: As2O3 三氧化二砷; 砒霜 (Also called arsenic)