The worst part of winter
本文作者： 21ST
INFLUENZA (FLU, 流感) is one of the most common diseases in winter. It causes symptoms (症状) such as sore throat, a running nose, and dizziness. It usually takes weeks before you feel like yourself again. It may well make you unable to enjoy your holiday. Read the piece below to understand more about this kind of disease. |  |
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