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But the HEPA filter for Olivers Vibe got dirty very quickly. And, it was not cleanableit was simply replaceable. When it turned filthy brown, Oliver went back to Target to buy a new filter. Oddly, Target sold the F15 belt for the Vibe, but not the fi
From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a
Ground - Connecting the Earth to electrical equipment with a conductor. This is done so current overloads (perhaps due to a lightning strike) can be safely diverted to the Earth. Ground Fault Circuit
中文 英文 缩写 搭接业务/代答业务/截接业务(PBX) pick-up service 达林顿放大器 Darlington amplifier 打包带 strap 大功率/高功率的 high power 大规模集成电路 Lar
Joseph had a new job. He was a security guard for his favorite band. He thought it would be the best job ever. He would get to listen to the band play every night. He would even get paid for it! Joseph quit the job after the first night. He was walki