教官在给准海豹队员们演示水下的作战技巧。然而队员们分别开始捉对撕杀，在池中演练实战技术。
5an instructor demonstrates water combat techniques to prospective SEALs. The sailors then pair off, and practice the technique in a pool.
曾几何时我们完全关注这些法则并且在每次约会时都会得到实战演练。
For a time we are completely aware of the rules of dating and we practice those rules every time we meet someone.
你可以由读书开始，但是最好的方法是实战演练并获得反馈。
You can start by reading books, but the best way to improve is to practice and get feedback.
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