We should strictly observe the discipline.

我们要严格遵守纪律。

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We must strictly observe the traffic rules.

我们必须严格遵守交通规则。

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Strictly observe all the bylaws of the company.

严格遵守公司所订的各项规章制度；

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Futures brokers were required to disclose the holders of large positions to regulators in real time, and to strictly observe margin limits.

CNN: FIGHTING 'GODZILLAS'

The Conference therefore calls upon States and all parties to armed conflicts strictly to observe international humanitarian law, as set forth in the Geneva Conventions of 1949 and other rules and principles of international law, as well as minimum standards for protection of human rights, as laid down in international conventions.

UNESCO: Vienna Declaration and Programme of Action

Instead, the main diplomatic legacy of the Himalayas faceoff will be permanent damage to the Sino-Indian border accords of 2005, in which both states agreed to "strictly respect and observe" the de facto border known as the Line of Actual Control.

WSJ: Brahma Chellaney: Beijing's Triumph of Coercive Diplomacy