在我上床睡觉之前，我会看一下书或听一下音乐。
Before I go to bed, I will do some reading or listen to some music.
选择好一套参考书后，先要看一下书的前言部分。
After choosing a reference book, want to see the introductive share that delivers a letter first.
选择好一套参考书后，先要看一下书的前言部分。
After choosing a reference book, want to see the introductive share that delivers a letter first.
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