fastian

例句：

1. 1.The car accelerated to a fastian speed on the highway.
   汽车在高速公路上以高速行驶。
2. 2.She moved quickly to catch up with him.
   她迅速地赶上了他。
3. 3.The project was completed in a fastian timeframe.
   这个项目在快节奏的时间内完成了。