AN ATTACK on Russian forces in Syria on January 5th by 13 home-made drones is a good example of "asymmetric" warfare. On one side, exquisite high-tech weapons. On the other, cheap-as-chips disposable robot aircraft. Ten of the drones involved attacked a Russian airbase at Khmeimim. The other three went for a nearby naval base at Tartus. Rather than being quadcopters, the most popular design for commercial drones, the craft involved in these attacks (some of which are pictured above) resembled hobbyists' model aircraft. They had three-metre wingspans, were built crudely of wood and plastic, and were powered by lawn-mower engines. Each carried ten homemade shrapnel grenades under its wings.
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机译：BUZZ-YO-CHILD是一种袋装标签设备，其发明目的是在上学期间协助学生和家长。本发明将有助于使交通平稳地流过停靠降落区。大多数学校目前在放学期间面临许多问题，包括交通拥堵，学生坐在阳光下以及猜测父母何时开车经过。 Buzz Yo Child将在学校Wi-Fi系统上运行，并且家长将具有Buzz-Yo-Child应用程序，以将蜂鸣器警报发送到行李牌，以警告学生其父母在排队等候接送。
