inspection at random

例句：

1. 1. Thecompany conducted an internal inspection of its operationslast month.
   该公司上个月对其运营进行了内部检查。
2. 2. The teacher inspected the students'homework before class.
   老师在课前检查了学生的作业。
3. 3. The government is conductinga thorough inspection of the construction site.
   政府正在对建筑工地进行彻底的检查。