1. classify vt. 分类，归类
例句：He carefully began to classify the results of his examinations.
他开始细心地为他的检验结果分类。

2. remove vt.去除; 开除
例句：Completion of this work will remove the threat of drought and water-logging.
完成了这项工程,将消除旱涝威胁。

3. gather vt.收集; 采集
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。

4. pipeline n.管道; 输油管道
例句：Reccntly they have laid an underground pipeline.
最近,他们铺设了一条地下管道。

5. solve vt.解决; 解答
例句：Will you help me to solve this puzzle?
你能帮助我解决这个难题吗？
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