Technologies need to advance in a logical supply-and-demand-driven order rather than the fits and starts of porkbarrel science.
FORBES: Catching Air Without NASA: How Will We Regulate Commercial Space Flight?
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。