for s in sorted(stale):
雷达向飞机发射脉冲，脉冲从目标反射回雷达。通过测量脉冲发射和接收之间的时间差，并知道脉冲是以光速传播的电磁波，雷达可以轻松计算飞机的距离 \( r \)。除了距离，雷达还可以测量飞机的速度 \( v \)，就像警用雷达枪利用多普勒效应检测汽车速度一样。
。向日葵下载对此有专业解读
Врач посоветовала некоторым людям с осторожностью есть помидоры17:33
工业旅游成为新趋势，消费者通过实地考察促成购车决策
四月八日现货贵金属价格急速攀升，黄金单日涨幅达2%，报4811.15美元/盎司；白银涨幅扩大至4%，触及76.31美元/盎司。
Most prior research has been typically useful primarily for identifying animal remains; it’s more challenging to identify the kinds of plants ancient peoples might have consumed. The authors of this latest paper combined several analytical techniques to study the residues of 58 pottery pieces dating between the 6th and 3rd millennium BCE. And they, too, conducted their own experiments, cooking various combinations of the ingredients in ceramic vessels over an open fire.