Letters are no longer fixed in black ink on paper, but flitter on a glass surface in a rainbow of colors as fast as our eyes can blink.
文字已经不限于用笔墨书写的固定字块，而可以成为在玻璃屏幕上快速闪烁、多姿多彩的活动文字。
With each blink of the eyelids, tears are spread across the front surface of the eye, known as the cornea.
每当我们眨眼睛的时候，泪液就会快速覆盖眼球前表面的角膜。
If you do not blink enough the surface of the eye becomes dry which can cause damage.
不经常眨眼睛会导致眼表面干燥，给眼带来伤害。
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