fire retardant paints造句
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retardant造句
Theseatingismadeofflameretardantpolyurethanefoam,injecteduponsteelframes.Firefighterswerepulledfromthetopofthemountainafterclearingbrushandsprayingretardantonantennasbecauseitwastoodangerousforthemtor...
flame retardant造句
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