The technology is harmless, yet it can detect items concealed inside the human body.
该技术是无害的，同时还能探测出藏身上的物品。
Because it is inside and outside concurrently repairs to the human body function.
因为它对人体的作用是内外兼修的。
Because it is inside and outside concurrently repairs to the human body function.
因为它对人体的作用是内外兼修的。
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