来自 rigor,严格，严厉，严谨。

1. Taxis must conform to the rigorous standards laid down by the police.

出租车必须遵守警方的严格规定。

2. The selection process is based on rigorous tests of competence and experience.

选拔过程是基于对能力和经验的严格测试。

3. The work failed to meet their rigorous standards.

工作没有达到他们的严格标准。

4. The soldiers were not yet seasoned to the rigorous climate.

士兵们尚未能适应此种严寒的气候.

5. The arms trade should be subject to rigorous controls.

对军火贸易应该严加限制.