while (stack.length && stack[stack.length - 1] cur) {
当地时间2月28日，巴基斯坦方面公布截至当日9时的阿富汗方面损失情况。通报称，阿富汗方面已有331人死亡，超500人受伤。此外，阿方104个检查哨所被摧毁、22个哨所被占领，163辆坦克和武装车辆被摧毁，阿境内37个地点已被有效锁定为空袭目标。
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Kirk Jones, director of Bafta-winning film I Swear, has said John Davidson was "let down", after the Tourette's campaigner's racist slur was broadcast during the BBC's coverage of Sunday's ceremony.
tee() splits a stream into two branches. It seems straightforward, but the implementation requires buffering: if one branch is read faster than the other, the data must be held somewhere until the slower branch catches up.
（二）在边远、水上、交通不便地区，旅客列车上或者口岸，公安机关及其人民警察依照本法的规定作出罚款决定后，被处罚人到指定的银行或者通过电子支付系统缴纳罚款确有困难，经被处罚人提出的；