应用微计算学
Still, it was the advent, in the mid-nineties, of the Global Positioning System, along with advances in microcomputing, that ushered in the possibility of automated unmanned flight.
NEWYORKER: Here??s Looking at You
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。