classification unload protection

例句：

1. 1.In the classification of species, scientists use various methods to determine their characteristics.
   在物种分类中，科学家使用各种方法来确定它们的特征。
2. 2. The classification of data is crucial for analyzing and interpreting information.
   数据分类对于分析和解释信息至关重要。
3. 3. The classification of goods into categories helps in efficient distribution.
   将商品分类有助于高效分配。
4. 1. The truck driver unloaded the cargo at the dock.
   卡车司机在码头卸载了货物。
5. 2. The train was unloaded at the station.
   火车在车站卸载。
6. 3. The workers unloaded the crates from the ship.
   工人们从船上卸载箱子。