小心点。油漆还没有干。
在这一点上，逻辑是占上风的，因为灯光昏暗、人们忙碌，而且现场的油漆高度易燃。
Logic prevails on this one as with dim lighting, busy people and highly flammable fresh paint on the set.
更小一点如盐粒大小的传感器可以被掺入油漆中，把整个表面变成无线传感器——可以侦测物体的运动或是担当烟雾警报器、安全系统。
Still smaller versions the size of specks of salt can be added to paint, turning entire surfaces into wireless sensors that can detect motion or act as smoke alarms or security systems.
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