如果你跌倒了，掸掉身上的灰尘，不要放松。
如果你担心跌倒，你可能速度太快了或者坡度太陡了。
If you're concerned about falling, you're probably running at too fast of a pace or too much of an incline.
(如果老年人)跌倒应在家庭成员陪同下到医院，要是联系不上咋办？
If the senior citizen falls, he should be accompanied by their family members to the hospital. But if we can't get in touch with them, what can we do?
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