最新研究显示，头发变白是一化学链式反应的结果，正是这一反应导致头发自身从里向外变白。
New research shows that hair turns gray as a result of a chemical chain reaction that causes hair to bleach itself from the inside out.
最新研究显示，头发变白是一化学链式反应的结果，正是这一反应导致头发自身从里向外变白。
New research shows that hair turns gray as a result of a chemical chain reaction that causes hair to bleach itself from the inside out.
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