It's difficult to define the exact nature of the problem.
很难给这个问题确切定性。
Her second husband was the exact opposite of her first.
她的第二任丈夫与第一任截然不同。
Assessing insurance risk can never be an exact science.
估定承保的风险永远不会成为一门精确的科学。
It happened late last century ─ in 1895 to be exact.
那事发生在上个世纪末——确切地说，发生在1895年。
What is the exact location of the ship?
那条船的确切位置在哪里？