他突然打了个寒战,知道自己要发烧了。
He experienced a sudden ___rigor and realized a fever was coming.
士兵们必须忍受沙漠环境的严酷考验。
The soldiers had to endure the ___rigors of the desert environment.
为了保证准确性,实验必须严格按照科学的严谨性进行。
The experiment must be conducted with scientific ___rigor to ensure accuracy.