在你建立起一个很好的身体基础之前，过快的提高英里数很容易使身体受伤。
One of the easiest ways to get injured is to increase your mileage too soon, before you've established a good running base.
刚开始跑步时是最容易受伤的，因此医生建议大家要循序渐进，慢慢来以最小化对身体的伤害。
The risk is greatest when people take up running. Doctors advise starting gently and working up gradually, to minimise damage.
该训练机的横杆没有弹性，容易使身体受伤。
The problem: the bar on the machine doesn't give, which can force the body into risky positions.
该训练机的横杆没有弹性，容易使身体受伤。
The problem: the bar on the machine doesn't give, which can force the body into risky positions.
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