实验必须在老师的监督下进行。

The experiment must be conducted under the teacher's ___supervision.

孩子们在老师的监督下完成了实验。

The children completed the experiment under the teacher's ___supervision.

这家餐厅在卫生部门的监督下提升食品安全标准。

The restaurant improved food safety standards under the ___supervision of health authorities.