即便是咖啡和茶对降低罹患脑胶质瘤风险有些直接效果，其影响也很小。

And even if coffee and tea have some direct effect on glioma risk, the impact would be small.

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史特沃氏及其它清楚地表明碳链长度对安全佐剂的直接效果。

Stewarttull et al clearly show the direct impact of the length on the safety of adjuvants.

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不过，这些氏族政策在实施过程中，并未取得理想的直接效果。

But in the process of the implement, these clan policies did not achieve perfect direct effects.

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