bó / wù / guǎn / de / gōng / zuò / rén / yuán / xiàng / hái / zi / men / yǎn / shì / le / zuān / mù / qǔ / huǒ博物馆的工作人员向孩子们演示了钻木取火。The museum staff demonstrated how to make fire by drilling wood for the children.