New Words：

loyalty [ˈlɔɪəlti] n. 忠诚；忠实
previous [ˈpriːviəs] adj. 先前的；以往的；上一个；前一个

Sample Sentences：

He has a heart of loyalty to the people.
He doesn't have to prove his loyalty to you.
This showed his love and loyalty to his motherland.

When did the previous train leave? 30 minutes ago.
What do you like and dislike about your previous job?

prove [pruːv] v. 证明;证实

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