paperback
noun
ˈpeɪpəbæk
noun
1
a
book
with
a
stiff
paper
cover
平装书，简装书;
a
shelf
full
of
paperbacks
放满了平装书的书架
in
paperback
Her
first
novel
sold
over
20,000
copies
in
paperback.
她的第一部小说的平装本卖了 20,000 多册。