be more exact

例句：

1. 1.The math problem was solved with greater accuracy than before.
   这次数学问题解决得比之前更准确。
2. 2.The teacher asked the students to be more exact in their answers.
   老师要求学生们在回答时更加准确。
3. 3. The engineer used a more exact method to design the new machine.
   工程师采用了一种更精确的方法来设计新机器。