作为对该和解姿态的回应，莫斯科发出了消除威胁的信号，取消部署在欧盟范围内加里宁格勒飞地的短程导弹。
Moscow responded to the conciliatory moves by signalling the cancellation of threats to deploy short-range missiles in its Kaliningrad exclave, which sits within the EU.
非视距声信号通常经过绕射到达基阵，根据广义费马原理，传播路径为一条短程线。
The NLOS sound signal usually arrives at acoustic array by diffraction, and the diffracted transmission path is a geodesic according to the extensive Famat's principle.
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