科学家最后明确指出，导致人眼睛颜色变化的的关键就是遗传基因和外伤。
The bottom lines Eyes can change color in some people because of genetics or injury.
最后，定义明确的，可现在是屏幕的成员。
Finally, define clear, which can now refer to the members in Screen.
中心的研究的问题，文章最后应该明确的回答。
A central research question that should be answered explicitly at the end.
中心的研究的问题，文章最后应该明确的回答。
A central research question that should be answered explicitly at the end.
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