Kev Kawm |

Material Transformation Science Experiment
los ntawm Admin nyob rau hauv 22-12-15
Hauv lawv cov chav kawm Science, Xyoo 5 tau kawm txog chav tsev: Cov ntaub ntawv thiab cov tub ntxhais kawm tau tshawb xyuas cov khib nyiab, kua thiab roj.Cov tub ntxhais kawm tau koom nrog kev sim sib txawv thaum lawv offline thiab lawv kuj tau koom nrog hauv kev sim online xws li ...
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