The normal darting movements and brief fixations of the eye. The fact that the eye is normally in constant movement helps to undermine the idea that it serves as a lens producing an internal image for our inspection.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。