Handled basic household maintenance. - replaced the ac filter, applied pest control spay, replaced fire alarm batteries, etc.

完成了家里一些基本的维修工作。——换了空调过滤网，喷了杀虫药，给火灾报警器换了电池，等等。

youdao

Are they basic, such a light dimmer, or more imposing, like an alarm system or a video camera?

它们是基础部分（比如说调光器），还是稍高端点儿的（像警报系统或摄像头）？

youdao

Through the internship site during the study and master the guidance and teachings, I have automatic fire alarm system also has basic knowledge and understanding.

通过实习期间在工地的学习和师傅的指导与教诲，我对火灾自动报警系统也有了基本的认识和了解。

youdao

These basic principles are important," Dr.Pappas emphasizes that, while there is no cause for alarm, countries where health care infrastructure is weak are the most vulnerable.

VOA: standard.2009.04.28

While Anixter works the cafeteria, Spinell is talking up one of Anicom's basic businesses -- cables for security alarm systems -- to TW's sales force.

FORBES: All in the family