Exercise gently can avoid putting yourself under undue strain.
轻微运动会避免造成不适当的拉伤。
And my focus, naturally, was putting this trip together without causing undue strain on my budget.
我的重点,自然是在完成这趟旅行的同时,不至于让我的预算过于紧张。
Isolating the lower body while pedaling might feel like a great exercise for the quadriceps, but it can place undue strain on the knees and spine.
站在踏板上作上下蹲的动作,看起来好像对锻炼大腿四头肌特别有效,其实它对膝盖和腰椎都有伤害。
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