When she was only twelve years old, Mary became the first person to find the almost complete skeletons of several animals that no longer existed on Earth.

VOA: special.2009.05.13

and like posing with different props, like posing with bones and skeletons.

比如拿着道具摆各种造型，拿着骨头和骷髅摆造型。

在市场遇到的人 - SpeakingMax英语口语达人

The skeletons have growth rings that represent ocean water conditions at the time.

VOA: special.2009.05.12

Corals have hard, stony skeletons that grow like tree trunks.

VOA: special.2009.05.12

Since the 19th century it has systematically collected all varieties of fossilized skeletons.

VOA: standard.2009.12.08