要發表有價值的見解,也許應該讀讀原文?
所有跟帖:
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The vaccine was significantly more effective … if they had not b
-ephd-
♂
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12/01/2015 postreply
14:18:31
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這句話說明接種是有效的。至於如何提高效果,是另外的問題。
-吃與活-
♂
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12/01/2015 postreply
14:30:25