Barrier na amo, wanda kuma ake kira bangon sauti / shingen sauti.galibi ana amfani da su don keɓewar hayaniya da rage manyan hanyoyin mota, titin jirgin ƙasa, titin jirgin ƙasa, titin jirgin ƙasa, manyan hanyoyin haɗin gwiwa da sauran hanyoyin hayaniya.Yana iya kasu kashi na tunani irin sauti shãmaki na tsantsa sauti rufi, da fili s ...
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