要发表有价值的见解，也许应该读读原文？

所有跟帖： 

• The vaccine was significantly more effective … if they had not b -ephd- ♂ (258 bytes) () 12/01/2015 postreply 14:18:31

• 这句话说明接种是有效的。至于如何提高效果，是另外的问题。 -吃与活- ♂ (0 bytes) () 12/01/2015 postreply 14:30:25