The harsh truth of life is that it's a viscouscycle.
残酷的现实在于，这是一个黏性的循环。
2
The viscouscycle you should be aware of, is that an allergy or intolerance, when chronic can lower your immune system. Which causes stress to your physiology.
你应该谨记一点，长期的过敏或者厌食会降低你的免疫系统功能。
3
Viscous sub-cycle time step and Lagrangian sub-cycle time step are adopted to accelerate convergence.