In this paper, it gives some basic models on snowfall and working of snow sweeper.
本文给出了降雪及铲雪机工作的基本模型。
Medvedev recalled working as a labourer and a snow sweeper while studying for a law PhD at Leningrad State University.
他还回忆起在列宁格勒国立大学修读法学博士时当打工族和扫雪工的情景。
Medvedev recalled working as a labourer and a snow sweeper while studying for a law PhD at Leningrad State University.
他还回忆起在列宁格勒国立大学修读法学博士时当打工族和扫雪工的情景。
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