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| 英语 词库 | |||
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| Carboniferous (MichaelBurov); Carb (MichaelBurov) | |||
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| A naturally abundant element that occurs in many inorganic and in all organic compounds, exists freely as graphite and diamond. | |||
| carb | |||
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| Carboniferous (MichaelBurov); Carb (MichaelBurov) | |||
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carbon : 1 短语, 1 学科 |
| 微软 | 1 |