我覺得是A
所有跟帖:
•
a is wrong since the carrier is infectious
-fuz-
♂
(0 bytes)
()
03/21/2020 postreply
06:21:03
•
他的A是non infectious 呀
-awr-
♀
(0 bytes)
()
03/21/2020 postreply
06:40:55