a external feedback
外部反馈
以上为机器翻译结果，长、整句建议使用 人工翻译 。
During the study, blindfolded participants threw darts at a dartboard and then received poor performance feedback either from a university-affiliated researcher or from an external researcher from a rival university.
BBC: Dart throwing while blind, no concerns there
He says the school uses a board of external business advisers to constantly give feedback on the MBA course curriculum.
CNN: Degrees go for specialist redesign
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