The chest bone marrow is the best material in the micronucleus test.

胸骨髓是微核试验的最好材料。

youdao

I have busted, like, every bone in my body, stabbed myself in the chest, I've shoved a two-foot steel rod through my neck, and l don't have a scratch on me.

这里，她 bust(ruin completely) every bone, stab(刺伤，用刀等捅) herself in the chest, shove a two-foot steel rod through her neck（把一个两脚钢杆穿过脖子）, but with no scratch on her看起来就很像这种表演。

youdao

Whenever we lift or open the chest, we actually want to lift the manubrium (bone above the sternum) upward while we lower the xiphoid process (bone below the sternum) downward toward the navel.

当我们提起并打开胸腔时，我们实际上要提起胸骨柄(胸骨上面的骨头)向上，同时剑胸骨(胸骨的底端)向肚脐的方向下沉。

youdao

Through fossil clubs and field trips to quarries, Prokopi got to know older hunters who spent their lives beachcombing or standing chest deep in muck, searching for bone.

NEWYORKER: Bones of Contention

He acted with his creased brow, his jagged bone structure, and his narrowed eyes, as well as with the muscles in his chest, shoulders, and neck.

NEWYORKER: Mr. Majestyk