New Words：

captain [ˈkæptɪn] 船长;机长;队长
difficult [ˈdɪfɪkəlt] 困难的;费力的;难做的

Sample Sentences：

The captain invited us to have dinner with him in the ship's dining room.
I said goodbye to the captain, left the ship, and went to begin a new life.

It's easy to say, but difficult to do.
She finds it very difficult to get up early.
It is difficult for young people to find jobs.

invite [ɪn'vaɪt] 邀请

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