慢速英语:Scientists Find Most Ancient Evidence of War

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1. discover vt. 发现; 碰见; 撞见
例句：You shall not discover it to any person in the world.
你不要向世上任何人道破这件事。

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. appear vi.发表; 出现，显现; 出庭
例句：They appear to be very sensitive to mildly corrosive environments.
它们似乎对轻度的腐蚀环境非常敏感。

4. experience n.经验，体验; 经历
例句：Experience tells us that Backspace does nothing of the sort.
不过经验告诉我们，退格键不会那样。