蜂鸟悬停在空中。

The hummingbird is ___hovering.

一只蜂鸟在空中盘旋，停留在花朵上方。

A hummingbird was ___hovering in the air, staying above the flower.

他在决定是否要搬去新城市时一直犹豫不决。

He kept ___hovering over whether to move to the new city or not.