What kind of pain is it? Intermittent or persistent?
是怎样的疼？是间歇的还是持续的？
Thee pain came on suddenly while walking up the stairs and it was persistent.
当上楼梯时，突然痛了起来，并且持续不止。 。
The pain came on suddenly while walking up the stairs and it was persistent.
当上楼梯时，突然痛了起来，并且持续不止。
The pain came on suddenly while walking up the stairs and it was persistent.
当上楼梯时，突然痛了起来，并且持续不止。
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