ultrafast

例句：

1. 1. The new car is ultrafast in acceleration.
   这款新车在加速方面非常快。
2. 2. Ultrafast internet connections are essential for online gaming.
   超快的互联网连接对于在线游戏至关重要。
3. 3. The researchers developed an ultrafast laser that could cut through metals with ease.
   研究人员开发了一种超快激光，可以轻松切割金属。