hyperbolic navigational aid

例句：

1. 1.The project is overly ambitious.
   这个项目过于雄心勃勃。
2. 2. The scientist's research was excessively flawed.
   科学家的研究过于有缺陷。
3. 3. The spacecraft traveled at hyper-speed.
   宇宙飞船以超音速飞行。