视频对话：
Taking a vacation?
来度假的？
I'm on an expedition.
我是来探险的。
Where's your baggage?
你的行李呢？
本期学习词汇：
expedition
n. 探险；远征；旅行
例句：
1. I am planning a mountain climbing expedition.
我在计划登山探险。
2. The fervent testimonial confirmed the President in his intention to let the expedition go ahead.
热情的表扬坚定的了总统让这次远征进行下去的决心。
3. The expedition was bedevilled by bad weather.
探险队深受恶劣天气的困扰。