表达 “hit the books” 的意思并不是 “击打书本”，而是 “做功课、用功看书” 的口语说法，人们多用它来表示为准备重要的考试而看书、努力学习。

• Wow, that exam is soon. I really need to hit the books if I'm going to pass.
  哇，那门考试就要到了。我要是想通过，那就真得开始用功学了。
• She's a really good student. She's hit the books every night since the course started.
  她是一名很优秀的学生。从课程开始以来，她每晚都用功学习。
• All I can think about is passing this course so I'd better hit the books all weekend.
  我满脑子想的就是要通过这门课，所以我最好整个周末都用功读书。