An intricate set of metal layers focuses and manipulates incoming radio waves, allowing the tag to send back a clear signal.
这套装置以一系列精巧的金属片来聚焦和操控入射的无限电波，使标签将清晰的信号反射回来。
It means that you repeat back some words he is using, sending a clear signal that you're listening carefully and that you think what he is saying is important.
意思是你复述一些他正在用的一些词语，发出一个明确的信号——你正在仔细地听，并认为他所说的一切是多么重要。
It means that you repeat back some words he is using, sending a clear signal that you're listening carefully and that you think what he is saying is important.
意思是你复述一些他正在用的一些词语，发出一个明确的信号——你正在仔细地听，并认为他所说的一切是多么重要。
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