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

This paper introduces the method of design and basic circuit of language alarm of PLC control system, and provides the guidance for designing and maintaining it .

介绍了PLC控制系统语言报警器的设计方法及基本电路，为设计和维护PLC控制系统语言报警器提供了依据。

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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