1. She always wears a hairnet to keep her hair in place while cooking.
她在做饭时总是戴着发网，以保持头发的整齐。

2. The cafeteria workers are required to wear hairnets to ensure food hygiene.
食堂工作人员被要求戴着发网，以确保食品卫生。

3. The hairnet is commonly used in industries such as food processing and manufacturing.
发网在食品加工和制造业等行业中被广泛使用。