Ag2S造句怎么写
- 造句
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A valuable silver ore, Ag2S, with a lead - gray color and metallic luster that is often tarnished a dull black.
如果我是一只猫我想我会养好多条鱼。
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A valuable silver ore, Ag2S, with a lead - gray color and metallic luster that is often tarnished a dull black.
如果我是一只猫我想我会养好多条鱼。