zhè zhǒng / cái liào / suī rán / kě rán / dàn / rán shāo / shí / chǎn shēng / de / yān wù / yǒu / dú

这种材料虽然可燃，但燃烧时产生的烟雾有毒。

Although this material is flammable, the smoke it produces when burning is toxic.