direct onto a point or target, especially by automatic navigational aids
同义词：range in??/??home in
adjust (as by firing under test conditions) the zero of (a gun)
同义词：zero
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。