Females plant a single egg in a dung ball where it matures from larva to fully formed beetle, feeding off the waste.

雌性蜣螂会在每个粪球中种下一个虫卵，虫卵以粪便为食，直到幼虫完全发育成成虫。

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Their characters are fully formed and they are both very stable children.

他们的性格已完全定型，俩人都是很稳重的孩子。

《柯林斯英汉双解大词典》

He is fully formed and growing fast.

他发育充分，成长迅速。

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But they were fully formed adults and intellectuals, and that was a heady experience for a kid from Chicago.

但他们是很成熟的成人和知识分子，而这对一个来自芝加哥的小孩来说很不同。

普林斯顿公开课 - 人性课程节选

Adults, after all, are fully formed, independent beings, with internal strengths and knowledge to draw upon.

NEWYORKER: Hellhole

And, apparently, the shape of the Huayra fell out of Mr. Pagani's head almost fully formed.

WSJ: Pagani Huayra Review: If Da Vinci Made a Sports Car | Rumble Seat by Dan Neil

Agriculture seems to have arrived fully formed in what is now Kent, in the south-east, around 4050BC.

ECONOMIST: The Neolithic