原因之一是当症状出现时很多人都缓慢地寻求帮助。
One reason is that many people are slow to seek help when symptoms arise.
当她有复发症状的时候，她再次回去看医生。
When she had recurring symptoms she went back to her doctor.
当首次出现流感症状的时候服用这个产品时最好的。
This product is best used at the first onset of flu symptoms.
当血液再次流 过时，症状消失。
当怀疑一位朋友可能有某些以上的症状时我该怎么办？
What Can I Do if I Suspect a Friend May Have Some of These Signs?
当怀疑一位朋友可能有某些以上的症状时我该怎么办？
What Can I Do if I Suspect a Friend May Have Some of These Signs?
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