As an additional safeguard against weeds you can always use an underlay of heavy duty polyethylene.

作为另外一种预防杂草的防护措施，你可以一直使用一层厚重耐磨的聚乙烯底垫。

《柯林斯英汉双解大词典》

The leaflet explains how to safeguard against dangers in the home.

小册子告诉人们在家里如何防备各种危险。

《牛津词典》

This was done to safeguard against broken installations where the user preferences might change.

这样做是为了防止发生由于用户参数发生变化而破坏的安装。

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The commission will also draft recommendations on how to safeguard against possible future attacks.

CNN: Bush, Cheney face 9/11 panel Thursday

With a disarming twinkle he adds, "It is hard to know how to safeguard against this!"

FORBES: Magazine Article

That separation was originally required as a safeguard against abuse of citizens' rights by government investigative agencies.

CNN: 9/11 commissioner: 'I've received threats'