调动人体核心部位的肌肉力量向上抬体，成坐姿。

Engage your core muscles, then curl your upper body towards a sitting position.

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例如，鸟类大脑智力的中心部位现在被定名为大脑皮层。

For example, the bird's seat of intelligence or its higher brain is now termed the pallium.

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这个实验揭示出花瓣的边缘比它的中心部位多伸长40%。

The experiment revealed that the petals' edges elongated up to 40% more than their midribs.

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