从那时起，我就开始参与产品的开发以及测试，我还负责销售以及客户服务。

Since then, I have participated in the product development and testing and am also in charge of sales and customer service.

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销售：研究各种的销售地点并测试一下市场情况。

Selling: Explore various sales venues and test the market.

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分离测试：如果你需要销售文案，你应该找一个了解分离测试和多元测试的知识的文案。

Split testing: If you require sales copy, you should only work with a web copywriter with knowledge in split and multivariate testing.

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