Primate arms have one long bone, the humerus, in the upper arm above the elbow, and two thinner bones, the radius and ulna, in the forearm.

灵长类的上臂有一根长骨（肱骨），前臂有两根细骨（尺骨和桡骨）。

youdao

The humerus is the long bone of the arm.

肱骨是上臂的长骨。

youdao

Methods The fixator was used to treat 42 cases of long bone fracture.

方法采用镍钛形状记忆锯齿臂环抱内固定器治疗长管状骨骨折42 例。

youdao

The two patches of waste are connected together in the shape of a dog bone a really big bone about nine thousand kilometers long.

VOA: special.2009.09.22

Well, is this the same body as the-- as the long bone-- ? a fleshly bone that was here last week?

这个躯体-,和上周站在这里的-,那个躯体是一样的吗？

耶鲁公开课 - 死亡课程节选

Researchers have long known that bone marrow produces and contains monocytes.

VOA: special.2009.08.25

Barbaro sustained a broken cannon bone above the ankle, a broken sesamoid bone behind the ankle and a broken long pastern bone below the ankle.

NPR: Barbaro Makes Progress After Leg Surgery

Small, dark hands, they looked tanned to the bone by long years of outdoor work.

NEWYORKER: Town of Cats

Take its namesake dish: one long marrow-filled bone, topped with briny dollops of sea urchin and Meyer-lemon aioli, a one-two-three punch of umami, balanced by baby celery greens and crispy cubelets of potato.

NEWYORKER: The Marrow