To protect the rope from sharp edges or loose rock.

为了保护绳子避开尖锐的岩角或松垮的石块。

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Use blunt-edged hooks to keep children safe from sharp edges.

为了使儿童免受到割伤，最好使用钝边的挂钩。

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Although copper and stone tools continued to be used, bronze was far more successful in creating sharp edges that could be used as anything from saws and scythes to weapons.

尽管青铜器和石器还在继续被使用，但青铜在用于制造带有锋利边缘的物件方面要成功得多，这可以应用于从锯子、镰刀到武器等任何东西。

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Sawgrass gets its name from its sharp edges and can grow tall enough to hide predators and any sign of civilization.

WSJ: Man hunting for pythons finds mysterious jewelry

As it slowly attempts to smooth out the sharp edges of the deregulated higher-education system that it inherited from the government (1973-90) of General Augusto Pinochet, it has identified access to information as of central importance.

ECONOMIST: Chile