| 释义 |
drain·age
\-nij, -nēj\ noun
(-s)
1.
a. : the act or an instance of draining
< by this drainage of colonial wealth the empire financed its costly wars >
< drainage of the marshy lands was completed in a short time >
b. : draining : a gradual flowing off or dropping down
< complained of drainage of rain water into the cellar >
< gold drainage and gold hoarding … were feared — F.L.Paxson >
also : something that is drained off
< this lake receives the drainage of many mountain streams >
c. chiefly Britain : sewage; also : the sewage system of a building
2. : the manner in which the waters of a country pass off (as by streams and rivers)
< subsurface drainage >
3.
a. : the removal of excess water from land by means of surface or subsurface conduits; also : a system of such conduits
b. : aerial drainage
4.
a. : area or district drained (as by a river)
b. or drainage system : the streams or other waterways by which a region is drained
5. : the act, process, or means of drawing off fluids from a cavity or wound by means of suction or gravity
6. : a process or means of release of internal conflicts or pent-up feelings (as hostility or guilt) |