https://www.youtube.com/watch?v=BY0cqY1Z5ls炸左粒石就有個安全區保護罩咁擋哂d火咩原理黎粒石令啲火可以燒遠啲 冇咗粒石就燒唔到咁遠 好似係清咗間屋啲雜物 間屋火燭嗰陣咪少啲嘢比佢燒
https://www.youtube.com/watch?v=BY0cqY1Z5ls炸左粒石就有個安全區保護罩咁擋哂d火咩原理黎粒石令啲火可以燒遠啲 冇咗粒石就燒唔到咁遠 好似係
https://www.youtube.com/watch?v=BY0cqY1Z5ls炸左粒石就有個安全區保護罩咁擋哂d火咩原理黎
https://www.youtube.com/watch?v=BY0cqY1Z5ls