YOU SAID:
Gunpowder light, dust explodes in contact with fire spark
INTO JAPANESE
火薬の光、粉塵が火の粉と接触すると爆発する
BACK INTO ENGLISH
Gunpowder light, explodes when dust comes in contact with sparks
INTO JAPANESE
火薬の光、粉塵が火花と接触すると爆発する
BACK INTO ENGLISH
Gunpowder light, explodes when dust comes in contact with sparks
You've done this before, haven't you.