contentious

形容词 contentious:

1. inclined or showing an inclination to dispute or disagree, even to engage in law suits
   同义词：combative, disputatious, disputative, litigious
2. involving or likely to cause controversy- Tim W.Ferfuson

1. There is a contentious clause in the treaty.
   这条约中有一条有争议的条款。
2. This is a contentious book.
   这是一本有争议的书。

con.ten.tious

adj.（形容词）
Given to contention; quarrelsome.See Synonyms at argumentative ,belligerent
好争的：爱争论的；动辄争吵的参见 argumentative,belligerent
Involving or likely to cause contention; controversial:
有争议的：涉及到或可能引起争论的；有争议的：
例句：
.a central and contentious element of the book.(Tim W. Ferguson)
.此书中最主要也是引起争议的一点.(蒂姆W.弗格森)

【引伸】
conten.tiously
adv.（副词）
conten.tiousness
n.（名词）