我因为搬重箱子导致了背部拉伤。

I developed a back ___strain from lifting heavy boxes.

这位运动员在马拉松比赛中肌肉拉伤了。

The athlete suffered a muscle ___strain during the marathon.

长时间使用电脑可能导致手腕的重复性劳损伤。

Prolonged computer use can lead to a repetitive ___strain injury in the wrist.