an exact copy of the painting
那幅画的精确复制品
In the late 1700s, people did not know the exact time unless they were near a clock.
18世纪后期，除非身边有钟表，否则人们不知道确切的时间。
an exact scholar
治学严谨的学者
I read an article about paper, to be exact, about how much Americans use up each year.
我读到一篇有关纸的文章，确切地说，是关于美国人每年用纸量的文章。