就是指精神、心理、身体上的“压力”（不是物理方面的）
google上有很多例子：
...you can aid your body’s ability to replenish from the day’s unrelenting stress toll,and help.avoid adrenal exhaustion or adrenal ...
Work stress toll continues to rise.
You can also choose which things are worth the energy it takes,and the physical stress toll it takes,to get angry.