Many carried white flowers made of folded tissue paper in a sign of mourning.

许多人戴着纸折的白花表示哀悼。

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The surface area of the cerebral cortex - the folded gray tissue that makes up the outermost part of the brain - grows during childhood.

呈皱褶状的灰质组织组成的大脑皮层的表面在儿童期是不断发育的。

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The surface area of the cerebral cortex - the folded gray tissue that makes up the outermost part of the brain - grows during childhood.

呈皱褶状的灰质组织组成的大脑皮层的表面在儿童期是不断发育的。

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