The technology works by focusing sound into a narrow beam, just like light.
这项技术的原理是将声音压缩成类似于光的窄束。
I stopped focusing on the dark side of my childhood and found there was light.
我不再只注意童年时的阴暗面，进而发现其中也有光明。
I stopped focusing on the dark side of my childhood and found there was light.
我不再只注意童年时的阴暗面，进而发现其中也有光明。
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