交叉多路反馈系统
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multiple feedback system
多重反馈系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The foundation and others have estimated that it could cost between 1.5% and 2% of the overall budget for teacher compensation and benefits to implement a feedback and evaluation system based on multiple measures of teaching performance.
CNN: Bill Gates: Invest in better teaching
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