1. Trying to figure out this problem has been hit-or-miss . (要试图)解决这个问题只能是碰碰运气了。
2. The teachers did not have time to plan their courses for the new examination, and so their teaching was a hit-or-miss affair. 教师们没有时间为新的考试设计好他们的课程,因此他们的教学是漫无目的的。
3. The action scenes are hit-or-miss; you wonder whether the filmmakers blurred the images because they didn't have time to get the effects right. 动作场面是杂乱无章的,你会怀疑是否是制片人将画面模糊了,因为他们没时间来做正确的特效。