The repulsive forces exerted by the protons loosen the structure of the nucleus.

质子施加的斥力使原子核的结构松弛。

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Once synthesized, the histones move into the cell nucleus, where a section of DNA wraps around them to form a structure that resembles beads, or knots, on a string.

一旦合成，组蛋白就会进入细胞核，细胞核内的 DNA 片段会将组蛋白包裹起来，形成一种类似串珠或绳结的结构。

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Just as a snowflake requires a nucleus to spur the formation of its intricate crystal structure - a catalyst was required to spur the formation of the desired community.

一片雪花，必须有凝结核才能形成其复杂的晶体结构。在我们期望建立的群体中，同样需要这样的催化剂。

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Offers of cash caused a surge of dopamine in a tiny piece of neural machinery called the nucleus accumbens--a structure as ancient as backbones that plays a key role in addiction.

FORBES: This Is Your Brain On Money