慢速英语:Robot Helps Heal Human Muscle Damage

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词汇讲解：

1. involve vt.包含; 使参与，牵涉
例句：What does that involve? 
公司法包括什么内容？ 

2. increase vt.增加，增大
例句：He had the audacity to ask for an increase in salary. 
他竟然厚着脸皮要求增加薪水。 

3. identify vt.识别，认出
例句：If you band the bird's leg, you can identify it later. 
如果你在鸟腿上套上标记环,以后就能认出它。 

4. compete vi.竞赛; 竞争
例句：Here was a car priced to compete with the small imports. 
这部车的定价可与进口的小车竞争。