cycle of loads

例句：

1. 1. The cycle of loading and unloading is essential for the operation of the warehouse.
   装卸循环对于仓库的运作至关重要。
2. 2.The cycle of production and consumption is a fundamental economic principle.
   生产和消费的循环是经济的基本原理。
3. 3. The cycle of life is full of ups and downs, but it's also filled with hope and growth.
   生命的循环充满了起伏，但也充满了希望和成长。