nyob zoo, Kuv xav tau ib tug ntaus ntawv uas transmits 4 Yees duab yees duab teeb liab thiab cov ntaub ntawv signals rau controlling cov neeg hlau dua 2km rau hauv pem teb-rau-av sib txuas lus.
nyob zoo, Kuv xav tau ib tug ntaus ntawv uas transmits 4 Yees duab yees duab teeb liab thiab cov ntaub ntawv signals rau controlling cov neeg hlau dua 2km rau hauv pem teb-rau-av sib txuas lus.
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