形容詞 contentious:

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

1. There is a contentious clause in the treaty.
   這條約中有一條有爭議的條款。
2. This is a contentious book.
   這是一本有爭議的書。

con.ten.tious

adj.（形容詞）
Given to contention; quarrelsome.See Synonyms at argumentative ,belligerent
好爭的：愛爭論的；動輒爭吵的參見 argumentative,belligerent
Involving or likely to cause contention; controversial:
有爭議的：涉及到或可能引起爭論的；有爭議的：
例句：
.a central and contentious element of the book.(Tim W. Ferguson)
.此書中最主要也是引起爭議的一點.(蒂姆W.弗格森)

【引伸】
conten.tiously
adv.（副詞）
conten.tiousness
n.（名詞）