contact of curve

例句：

1. 1. The two countrieshave a long history of cultural contact.
   这两个国家有着悠久的文化接触历史。
2. 2.The scientist made contact with the spacecraft through a radio signal.
   科学家通过无线电信号与太空船取得了联系。
3. 3. The meeting was supposed to be a good opportunity for contacts between the two companies.
   这次会议本应是两家公司之间建立联系的好机会。