redline

1. That was the worlds resolve then, and that began nearly a century of effort to create a clear redline for the international community.
   那是世界当时的决心，并由此开始了近一个世纪的努力，在国际社会划出一条清晰的红线。
2. In addition, confidential direct redline telephone communication links have been established between the head of state of China and the heads of state of Russia and the United States.
   中国还与俄罗斯、美国建立了国家元首间直通保密电话联系。
3. The bomber is redline at 700 miles an hour.
   那轰炸机最大安全速度为每小时700英里。
4. Article 29. The State defines ecological redline for strict protection on key ecological functional zones, areas of sensitive and fragile ecological environment.
   第二十九条国家在重点生态功能区、生态环境敏感区和脆弱区等区域划定生态保护红线，实行严格保护。
5. A Question on Statement of Redline and Road Width Direction in Planning Road Surveying
   道路定线时红线与路宽方向的说明问题

verb

1. discriminate in selling or renting housing in certain areas of a neighborhood