He was running down the steps when he fell over.
他跑下台阶时，他摔倒在地。
It was difficult to keep a straight face when he fell over the dog.
当他绊着狗摔了一跤时，大家很难扳着脸不笑。
He fell over when he was running down the steps.
当他正跑着下台阶时摔倒了。
When he attempted to stride over the fence, he fell off the horse.
当他打算跨过篱笆的时候，从马上摔了下来。
The foolish fellow fell over his foot when he heard the owl hoot.
那个笨蛋听到猫头鹰叫声就摔了一跤。
When he looked out, he was so scared he fell over.
他往外一看，吓得摔了一跤。
When he went for the loose ball, he tripped and fell over.
在争抢球时他绊了一下，摔倒了。
When he went for the loose ball, he tripped and fell over.
在争抢球时他绊了一下，摔倒了。
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