科学家们正在测试一种新型悬浮摩托车，它能在离地一米的高度平稳飞行。

Scientists are testing a new ___hoverbike that can fly smoothly one meter above the ground.

科幻电影中的悬浮摩托车能在空中自由穿梭。

The ___hoverbike in the sci-fi movie can fly freely through the air.