They used special equipment to send out laser pulses into the web of a garden cross spider. Then they used a laser to measure the very small vibrations, which spread through the web.
他们利用特殊设备向一只十字园蛛的蛛网上发出激光脉冲，然后他们利用激光测量这种传遍蛛网的微小振动。
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