“放火的”的英语可以翻译为：incendiary ...

这些在图书馆放火的学生被控恶意破坏公物.The students who set fire to the library were charged with vandalism.我想这个房子是被人蓄意放火的.I believe that the house was deliberately set fire to.由于怀疑外国人放火的谣言四起,街上秩序出现紊乱.Order in the streets broke down as rum...