gōng / rén / xiǎo / xīn / de / bǎ / pò / sǔn / de / gāng / guǎn / huàn / chéng / le / xīn / de / guǎn / dào工人小心地把破损的缸管换成了新的管道。The workers carefully replaced the damaged earthen pipe with new piping.