educational simulations
教育模拟
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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