孩子失去平衡，从秋千上摔了下来。

The child ___lost ___his ___balance and tumbled off the swing.

滑冰时，她失去平衡，摔倒在冰上。

While skating, she ___lost ___her ___balance and landed on the ice.

为了避免事故，站在梯子上时一定要确保不要失去平衡。

To avoid accidents, always ensure you don't ___lose ___your ___balance when standing on a ladder.