在视网膜的中央凹的视力比网膜其他部份更敏锐。
Vision is much more acute at the fovea than at other portions of the retina.
一个就是视网膜中央凹，一个用来看颜色并察觉出细节的中间地带。
One is the fovea, a central area used to see colors and pick out details such as fine print.
在实验二中，我们进一步考察了中文语篇阅读中的这种副中央凹预视效应。
In experiment 2, we examined the parafoveal preview effect during the Chinese discourse reading.
参观者进入广东省博物馆要通过中央草坪上一条石头铺成的下凹道路。
Visitors enter the Guangdong Musuem through a stone-paved depression on its central lawn.
凹槽位于螺丝头 上，嵌槽凹设于凹槽的底部中央，而凸缘位于凹槽的外周缘。
The flute is located on the screw head, and the inserting recess is located at outer circumference of the flute.
凹槽位于螺丝头 上，嵌槽凹设于凹槽的底部中央，而凸缘位于凹槽的外周缘。
The flute is located on the screw head, and the inserting recess is located at outer circumference of the flute.
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