1. come to one's rescue前来救某人
2. keep the balance of nature保持生态平衡
3. appeal to sb.to do sth.号召/呼吁某人做某事
4. make an impression on sb.给某人留下印象
5. from my point of view就我看来；以我的看法
6. far from being satisfactory一点也不满意
7. be caught/trapped/stuck in a traffic jam遇上交通阻塞
8. keep in contact with sb.与某人保持联系
9. be under construction正在建设之中
10. have an appointment with sb.与某人有约
