真不幸，我在冰上摔倒时摔伤了膝盖。

Unfortunately, I hurt my knee when I fell down on the ice.

youdao

雪堆覆盖了公路的许多地方，我不断地跌倒，摔伤了膝盖。

Snowdrifts had covered the highway in many places and I kept falling down and bumping my knees.

youdao

雪堆覆盖了公路的许多地方，我不断地跌倒，摔伤了膝盖。

Snowdrifts had covered the highway in many places and I kept falling down and bumping my knees.

youdao