慢速英语:Mars: How Will Humans Get There?

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1. announce vt. 使旋转; 反复考虑
例句：Please announce to the children that there will be no school this afternoon.
请通知孩子们今天下午不上课。

2. gather vt. 收集; 采集; 聚集
例句：All the members of the family gather to enjoy a reunion dinner.
全家人聚在一起吃团圆饭。

3. attend vi.出席; 致力于
例句：Thousands of people attended the funeral
数千人参加了葬礼。

4. explain vt. 讲解，解释
例句：Would you please explain the theme in detail?
您是否能详细地说明一下主题?

5. determine vt.（使） 下决心，（使）做出决定
例句：The size of the chicken pieces will determine the cooking time
鸡块的大小将决定烹饪时间的长短。