zhè / gè / gá / sī / guàn / lǐ / de / qì / tǐ / kuài / yòng / wán / le / xū / yào / huàn / yí / gè / xīn / de

这个嘎斯罐里的气体快用完了，需要换一个新的。

The gas in this cylinder is almost used up and needs to be replaced with a new one.