事实上，作为一种古老的内容载体，长文始终有其存在的价值。
There are two main types of smoke alarm tech, says Raman Chagger, principal consultant at BRE, the Building Research Establishment. Ionisation-based systems use a tiny amount of radioactive material to charge, or ionise, particles in the air which flow between two small plates. Should smoke interrupt that flow of charged particles, the alarm goes off.
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近段时间，广西柳州融安县举办多场招聘会，向求职者提供数千个就业岗位。图为2月25日，融安县招聘会现场，求职者在交流。