他那样从楼梯上跌了下来，使背椎骨严重错位。
He put his back out badly, falling down the stairs like that.
从侧面观察，步幅大，前肢的伸展非常顺畅而平滑，使背线保持水平和稳固。
Viewed from the side, the reasonably long, ?reaching? stride is smooth and even, keeping the back line firm and level.
他死记硬背的学习方法使他在工作中不能灵活处理问题。
His poor method of learning by rote made him unable to deal with the problems in his work flexibly.
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