（作者单位：北京大学考古文博学院）
if (arr[i-1] arr[i]) return 0;
。关于这个话题，heLLoword翻译官方下载提供了深入分析
He says he was drawn to reinventing Slazenger because of its "interesting history", but that his generation didn't know what it stood for.
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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