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91. | collection of sewage |
| 收集污水 |
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92. | waste collection |
| 废物收集 |
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93. | litter collection |
| 收集垃圾 |
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94. | collection trap |
| 收集阱 |
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95. | collect some article |
| 收集文章 |
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96. | collection efficiency |
| 收集效率 |
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97. | collecting pump |
| 收集泵 |
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98. | collection procedure |
| 收集程序 |
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99. | collection coefficient |
| 收集系数 |
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100. | curio collecting | antiquarianism |
| 古董收集 |
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