... by trial and error 用试试改改的办法 ; 用试凑法 a sale by trial 试用买卖 I Learned By Trial 我学到审判 ...
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a sale by trial
试销
以上为机器翻译结果，长、整句建议使用 人工翻译 。
By virtue of its superior quality and moderate price, this item has met with a warm reception in American Continent. We deem it to your advantage to buy this item for a trial sale in your market.
例（a）通过产品在美洲市场畅销的事实说明它的质量上乘、价格适中，为下文劝说对方试销该产品作铺垫。
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