All the simulations are extensively tested for usability and educational effectiveness, and a rating system is used to indicate what level of testing they have received.

所有模拟的可用性和教育效用都得到广泛的测试，并运用评级系统来显示所达到的测试水平。

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There have been many studies and formed relatively consistent view in the view of moral educational effectiveness, while lacking the research of moral repayment.

在德育实效性方面，已经有了许多研究并形成了较为一致的观点，但道德回报方面的研究还比较缺乏。

youdao

There have been many studies and formed relatively consistent view in the view of moral educational effectiveness, while lacking the research of moral repayment.

在德育实效性方面，已经有了许多研究并形成了较为一致的观点，但道德回报方面的研究还比较缺乏。

youdao