非常快

• at the rate of knots

例句

1. 那些信号用非常快但几乎不变的速度来回传送。
   The signals go to and fro at a very high but almost constant speed.
2. 这个小男孩计算起数字来非常快。
   The little boy is quick at figures.
3. 这架飞机的速度非常快。
   The speed of this aircraft is very high.