out-,超过，do,做。

1. Sometimes small firms can outdo big business when it comes to customer care.

在顾客服务方面，有时小企业可能优于大企业。

2. Both sides have tried to outdo each other to show how tough they can be.

双方各不相让，都想显示自己有多么厉害。

3. It was important for me to outdo them, to feel better than they were.

超过他们，感到自己比他们更优秀，这点对我来说很重要。

4. Its natural beauty has the potential to outdo Hawaii.

台湾大自然的美貌所具有的潜力胜过夏威夷.

5. The effects of psychological balance outdo all health measures.

心理平衡的作用超过所有的“保健“措施.