有一次在货架最高层的货物掉下来了，但是它没有伤到员工；的翻译：Once upon a rack top cargo fall, but it did not hurt people; 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Once the goods on the shelf fell off the top, but it does not hurt people;

Once upon a rack top cargo fall, but it did not hurt people;

Once has fallen in the shelf topmost story cargo, but it has not injuried to the staff;

There is a rack in the highest levels fell out of the goods, but it does not hurt the staff;

Once upon a rack top cargo fall, but it did not hurt people;