That mutation is also the first link in a long chain of events that ultimately affects fingerprint development in the womb.

成胎期，基因变异仅仅是个开始，下游还有一系列最终会影响指纹发育的因素。

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Rail lift long chain of new or use after elongation, difficult to adjust, can see to remove the link, but must be an even number.

新的导轨式升降机链条过长或经使用后伸长，难以调整，可看情况拆去链节，但必须为偶数。

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From the long run, the protection of their rights should be highly observed, for they, as a whole group, are a significant link in the social ecological chain of human beings.

从长远来看，必须高度重视人类社会生态链中移徙工人权利保护这一环。

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Then, they reach a parking area and take a quarter-mile-long path toward the mountains that leads to a couple of acres of ground enclosed by an eight-foot chain-link fence.

NPR: Revisiting the Birth of the Bomb