The hard bone has dulled up the knife blade.

这硬骨头把刀刃弄钝了。

youdao

Unlike that benignly daft creature, this real-life surgeonfish in Indonesia carries a sharp retractable blade of bone near the base of its tail.

跟那只疯疯癫癫的亲切生物不同，印度尼西亚的这只正牌医生鱼在尾巴附近有一片能伸缩的锋利骨片。

youdao

Then let mine arm fall from my shoulder blade, and mine arm be broken from the bone.

情愿我的肩头从缺盆骨脱落，我的膀臂从羊矢骨折断。

youdao

Other finds include the bone comb once used by an image conscious lough dweller and a metal blade which is still sharp after hundreds of years.

BBC: nit comb

Pistorius, whose legs were amputated below the knee when he was 11 months old due to a bone defect, runs on special carbon fiber blades from which his nickname "The Blade Runner" derives.

CNN: STORY HIGHLIGHTS

In other words, a new metal "ball" is attached to the shoulder blade, or scapula, and a plastic cup is put at the upper end of the humerus bone.

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