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HSK levels

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    tǒng

    1. tube; cylinder
    2. to encase in sth cylindrical (such as hands in sleeves etc)

    我用一个纸筒来装这些铅笔。 Wǒ yòng yīgè zhǐ tǒng lái zhuāng zhèxiē qiānbǐ.

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    1. variant of 筒[tong3]