不被外界打扰用英语怎么说

To be undisturbed by outside influences in English is to be "undisturbed" or "uninterrupted". The word "undisturbed" comes from the Latin word "disturbare", which means "to disturb".
Here are some example sentences in English and their translations in Chinese:
The teacher asked the students to work in silence so they could be undisturbed. 老师要求学生安静工作，以便不受干扰。
The office was quiet and undisturbed, perfect for concentrating on work. 办公室安静无人打扰，非常适合集中工作。
I need a few hours of undisturbed time to finish this project. 我需要几个小时不受干扰的时间来完成这个项目。