1. The role of coach is complex and inexact. 教练的角色是复杂和不确定的。
2. Even now he is surprisingly inexact about what he wants. 即使现在,他还不知道自己到底要什么。
3. Although the term implies otherwise, "absolute" ages typically have some amount of potential error and are inexact. 虽然这一术语包含有定量的意思,“绝对”年龄仍会有一些潜在的误差,并不精确。