stringent

这一原则是严格的，几乎没有余地。

The principle is ___stringent, allowing little leeway.

这家制药实验室遵循严格的规程，以确保每一批次都达到纯度标准。

The pharmaceutical lab follows ___stringent protocols to ensure every batch meets purity standards.

这所烹饪学校强制执行严格的卫生标准，每位学生在进入厨房之前都必须掌握。

The culinary school imposed ___stringent hygiene standards that every student had to master before entering the kitchen.