hygiene of teaching

例句：

1. 1. The school has implemented strict hygiene measures to prevent the spread of diseases.
   学校实施严格的卫生措施以防止疾病传播。
2. 2. The government is working on improving public hygiene standards.
   政府正在努力提高公共卫生标准。
3. 3. Hygiene experts recommend washing hands frequently and using hand sanitizer when necessary.
   卫生专家建议经常洗手，并在必要时使用手部消毒剂。