His hometown, the underground city of Menzoberranzan, is a rough place, and his family achieved its position of power by adhering to the city's Golden Rule: Don't get caught.

他的家乡，地下城市魔索布莱城，是一个粗暴的地方，而且他的家族通过坚守城市的金箴规则：“不留活口”而取得了它的权力位置。

youdao

Secondly, the laser propagation rule in the underground air and error influencing factors of scanning point clouds were studied systematically.

第二，研究激光在井下空气中的传播规律及扫描点云数据的误差影响因素。

youdao

Through analysis and investigation, the author found out the operational rule of power supply system and based on the rule, a safe and reliable underground power supply system was set up.

通过分析、究，找出了其运行规律，在此基础上建立了安全可靠的井下供电系统。

youdao

And I've looked very carefully over the last few weeks at where we are with the London Underground and I'm very clear that we need to rule out privatisation of the London Underground.

BBC: News Online

Unfortunately, the consequence of the rule has forced runners to go underground while their power continues to be evident, and possibly growing with time.

FORBES: Despite NFLPA's Efforts, "Runners" Remain Powerful In Recruitment Of NFL Prospects

In 1967 she joined the Comando de Liberacion Nacional (Colina) and the Vanguardia Armada Revolucionaria Palmares (VAR Palmares), two underground Marxist organizations that sought to oppose the rule of the military via armed struggle.

FORBES: Names You Need to Know in 2011: Dilma Rousseff