They share a pigment used in hair dyes, which can lead to problems down the line.

他们使用染发剂的一种色素，它可以完全导致过敏症。

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Any modification may lead to updating each unique communication line in its own way.

任何修改都可能会按其自身的方式更新每条唯一的通信线路。

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They were in the lead . The finish line was close.

他们目前居于领先地位，终点线就在前面不远了。

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The tricky thing is of course that such trade-offs inevitably at some point somewhere down the line lead to something going seriously off the rails.

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