I use the spreadsheet not only for my work, but have used it with students to help them improve their own data keeping and analysis skills.

我不仅在工作上能使用计算机的电子表格功能，而且还会利用它帮助我的学生提高他们的数据管理和分析的能力。

Encourage enterprises to engage in e-commerce commissioned third-party electronic data-keeping system to preserve the transaction information.

鼓励从事电子商务的企业委讬第三方电子数据保存系统保存交易信息。