Senku, Taiju and Yuzuriha head to Hakone to collect sulfur for gunpowder, which they’ll need to fight Tsukasa. They accidentally set off an explosion, which attracts some unexpected attention.
were experimenting with it 
and got their limbs blown off.
.يختبرون الأمر وفجّروا أنفسهم بالخطأ
und so krasse Unfälle verursacht,
dass es ihnen Arme und Beine weggeblasen hat.
allant souvent jusqu’à se faire
exploser les membres.
sbagliassero gli esperimenti e bam!
Gambe e braccia che saltavano dappertutto!
em que estudantes tiveram seus
membros explodidos em experimentos.
случались такие взрывы,
что им руки-ноги отрывало.