The first find was a humerus, or upper arm bone, of a giant ground sloth.

第一个发现是巨型树懒的肱骨，或上臂骨。

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The first find was a humerus, or upper arm bone, of a giant ground sloth.

第一个发现是巨型树懒的肱骨，或上臂骨。

youdao