Sitting for long periods can make your back ache.

长时间坐着会让你的背部酸疼。

Whether my back ache was true or false these holes might be a reason to see a doctor.

不管腰疼真不真，光那些窟窿也能成为看医生的理由。

And this time, he'd gotten a bad back ache whenever he went jogging. So much that he had to stop doing it.

这次，他在跑步时感觉到了严重的背疼。疼得他不能再跑步。