Gra
abbr. （美）政府科学研究机构联合会（Governmental Research Association）
🗣️ 情景例句
If you find it unworkable, we have no other choice but to call the deal off.
如果不行的话，我们只好放弃了。
The best mirror is an old friend.
老朋友是最好的镜子。
Yes. You should never keep fish in a small round bowl.
错不了。你绝不能把鱼养在一个小圆缸里。