rebuttal可数，因为rebuttal是可数名词，复数形式是rebuttals，所以rebuttal可数。
rebuttal
美 /rɪˈbʌtl/
英 /rɪˈbʌtl/
n.
反驳；辩驳；反证
复数 rebuttals
双语例句:
Your remark is a blatant rebuttal of the prime minister's policy.
你说这番话是对总理政策的公然反驳。
The student found some arguments in the passage as rebuttals of his teacher.
这个学生从文章里找到了一些论据作为辩驳老师的依据。
