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A constitutional amendment precludes any president from serving more than two terms.
一项宪法修正案使得任何总统的任职不得超过两届。

The surface reactivity of many nonblack fillers generally precludes strong bonding with this type of matrix.
许多非碳黑填料的表面反应性一般阻碍与该种基质形成牢固的粘结.

This precludes placing therapeutic levels of drugs in the feed as a method of treatment.
这妨碍在饲料中按治疗法放入治疗量药物.

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