bó / wù / guǎn / zhǎn / chū / le / zhàn / zhēng / shí / qī / shǐ / yòng / guò / de / huǒ / yàn / pēn / shè / qì博物馆展出了战争时期使用过的火焰喷射器。The museum displayed a flamethrower that had been used during wartime.