Hence their duty is, on the one hand, to keep an unbiased attitude as far as possible, while, on the other hand, to acknowledge the tentative and relative character of the results of their research and not to conceal their own ideological position(s).

• 因此他们一方面有义务保持一种尽可能无偏见的态度,另一方面也有义务承认其研究结果的试验性和相对性特征，并且不隐瞒他们自己的意识形态立场。