管道

管道	guǎn dào	tubing / pipeline / (fig.) channel / means
管	guǎn	variant of 管
管	Guǎn	surname Guan
管	guǎn	to take care (of) / to control / to manage / to be in charge of / to look after / to run / to care about / tube / pipe / woodwind / classifier for tube-shaped objects / particle similar to 把 in 管...叫 constructions / writing brush / (coll.) to / towards
道	dào	road; path (CL:条,股) / (bound form) way; reason; principle / (bound form) a skill; an art; a specialization / (Daoism) the Way; the Dao / to say (introducing a direct quotation, as in a novel) / (bound form) to express; to extend (polite words) / classifier for long thin things (rivers, cracks etc), barriers (walls, doors etc), questions (in an exam etc), commands, courses in a meal, steps in a process / (old) circuit (administrative division)