Many toxic waste from factories
深刻度 » Profound degree 工厂的许多有毒废料 » Many toxic waste from factories 我要好好学习，认真听讲，做好课堂笔记，及时完成作业。
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... 自身勤奋不够 » Its hard enough 工厂的许多有毒废料 » Many toxic waste plant 我感觉跟你说话很困难 » I felt I speak to you very difficult ...
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