Are these sales of goods or sales of services?

这些买卖是货物买卖还是服务销售 呢 ?

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Notes receivable represent mainly bank acceptance bill received for sales of goods and products.

应收票据主要为销售商品或产品而收到的银行承兑汇票.

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I have gained quite a lot of experience in direct sales of goods and teaching.

我学到了直接推销商品和教学方面的经验.

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