He was encouraged to repeat using dirty oil and to conceal flaws in research-for which he was failed by the external examiner.
学校怂恿他使用污油，并且掩盖研究中的缺陷，为此，在外聘的主考人前，他的答辩失败了。
He was encouraged to repeat using dirty oil and to conceal flaws in research-for which he was failed by the external examiner.
学校怂恿他使用污油，并且掩盖研究中的缺陷，为此，在外聘的主考人前，他的答辩失败了。
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