Gra
abbr. （美）政府科学研究机构联合会（Governmental Research Association）
🗣️ 情景例句
That's a good idea.
好主意。
What are friends for?
朋友是做什么用的？
In the 1970s, computers were common enough, but only in big business, government departments, and large organizations.
在70年代，计算机已经相当普及了，但只用在大公司，政府部门和大的组织之中，