嗯，與病毒的數量濃度活度相關。同時也應與其宿體免疫強弱，是否有這病毒生存並繁殖“環境土壤”相關

來源: pickshell 於 2019-03-17 20:21:27 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.