Eyes on a watch, which in the end or buy it?
看中了一块手表，这到底要不要买呢？
In the study, the researchers let volunteers read, play games and watch movies on a screen for different time while measuring how much light their eyes received.
在这项研究中，研究人员让志愿者在不同时间于屏幕上阅读、玩游戏和看电影，同时监测他们的眼睛接收到的光线。
The eyes on the picture of a real bill are sharp and clear; so there's another sign to watch for.
真钞票图案上的眼睛锐利清晰，因而这是另一个辨别真伪的特征。
The eyes on the picture of a real bill are sharp and clear; so there's another sign to watch for.
真钞票图案上的眼睛锐利清晰，因而这是另一个辨别真伪的特征。
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