Keep sharp objects in their proper place. Handle carefully.

保持尖锐的物体在其合适的位置，小心处理。

youdao

Keep sharp lookout for signals of vessel in distress and report.

保持对遇险船信号仔细瞭望并报告。

youdao

Alloy steel via heat treatment, grinding blade, enable to keep sharp edge and high precision.

合金钢材质经热处理，研磨修边刀，刀口锋利，精密度高。

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Lagat credits Li for designing training plans that keep him sharp without wearing him out.

WSJ: Lagat seeks another record at Millrose Games

Mr Cardoso and the world have also to keep a sharp eye on Congress.

ECONOMIST: No peace for Brazil��s president

Aware of the dangers, pilots keep a sharp look-out for other craft.

ECONOMIST: Africa��s unfriendly skies