spot checking

例句：

1. 1. We decided to spot check the quality of the new product before releasing it to the market.
   我们决定在将新产品推向市场之前进行临时检查以检验其质量。
2. 2.The factory manager requested a spot checking of the production line to identify any potential issues.
   工厂经理要求对生产线进行临时检查，以找出任何潜在问题。
3. 3.During the construction phase, we conducted spot checking to ensure that all materials were being used correctly and efficiently.
   在建设阶段，我们进行了临时检查，以确保所有材料都被正确且高效地使用。