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| 弹性〔灰色，天然〕沥青; 矿质橡胶 | |||
| 弹性橡皮沥青 | |||
| 弹性沥青 | |||
| 灰色泥炭; 胶体腐殖酸盐 | |||
| 灰色沥青; 橡皮沥青; 腐殖质块; 泥炭中的腐殖凝胶; 天然沥青 | |||
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dopplerite : 2 phrases in 1 subject |
| Oil / petroleum | 2 |
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