栖息全暗洞穴中的蜥蜴和老鼠会在一眨眼(可以说)的功夫内丧失它们的视力。
Lizards and mice can lose their eyesight in a blink (so to speak) inhabiting lightless caves.
目的在亮、暗两种环境条件下，检测近视眼患者配戴三种矫正方式的对比度视力。
Objective To test contrast visual acuity (CVA) at bright and dark backgrounds for myopes with different modalities of refractive error correction.
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