This is a great application to study and learn from, especially if you need to build an e-commerce application of your own.
这是一个可供您研究和学习的绝佳应用程序，尤其是当您需要构建自己的电子商务应用程序时。
A lot of progresses have been made in that aspect of study and application.
目前这方面的研究和应用都取得了非常大的进展。
The result of study shows: application of gray systematic theory in the urban embankment project is appropriate practical and effective, and have a good prospect.
研究结果表明：灰色系统理论在城市堤防工程中的应用是恰当而实用有效的，具有良好的前景。
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