So far, other scientists have generally been willing to share their knowledge, but Downs is troubled by the prospect of companies' putting exorbitant user fees on their databases.
到目前为止，其他的科学家一般都愿意分享他们的知识，但公司希望能够向数据库的使用者收取很高的费用，Downs为此感到不安。
You also often face the prospect of paying 'unofficial fees'.
你也经常要面临被收“非官方费用”的处境。
You also often face the prospect of paying 'unofficial fees'.
你也经常要面临被收“非官方费用”的处境。
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