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0:14 1 ໄມໂຄຣໂຟນ 1 ບົດ 5 ចម្រៀក
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ບົດ

  1. 0:00
    ບົດ 1: Number 21. 14s · Speaker 1

    Number 21. How many computers will your laboratory need? Probably around 50. Every other week. The keyboards were included.