Translate the following pairs of derivatives paying attention to the meaning of prefixes.
| adequate – inadequate available – unavailable desirable – undesirable limited – unlimited match – mismatch natural – unnatural pure – impure purified – unpurified | purity – impurity satisfactory – unsatisfactory sorption – adsorption source – resource sufficient – insufficient suitable – unsuitable to move – to remove treated – untreated |
Transform as in the models.
Model 1 “Verb è Noun”: to define a term è definition of a term
To deliver water; to supply water; to disinfect water; to treat sewage; to soften hard water; to provide water supply; to pump water; to add flu- orine; to fluoridate water; to acquire, treat, transmit, store and distribute water; to remove pollutants; to neutralize undesirable impurities; to pro- vide consumers with water; to accomplish water purification; to con- struct a plant; to build an industrial enterprise.
Model 2 “Noun è Noun”: distribution of water è water distri- bution
Supply of water; systems of water supply; demand for water; water for drinking; high standards of purity; acquisition, treatment, transmis- sion, storage and distribution of water; collection of water; extreme shortage of water; facilities for water storage; conservation of water;
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plants for water purification; a facility for water storage; breaks of pipe- lines; filtration and disinfection of water; transportation of water.
Insert the appropriate word. (1)
The importance of a sufficient for domestic and industrial purposes has long been a deciding factor in the location of cities and towns. Early people realized this need and look advantage of natural
by establishing their settlements in close proximity to them.
Early people had no need of structures to supply their water. As man`s communities grew on population, the for water in- creased and the need for protection of the source of water increased and the need for protection of the source of water supply against the possibil- ity of became evident. Progress and civilization have called for elaborate and various systems and of water treatment.
Today water may be taken from any sources of water for human con- sumption after it has undergone a preliminary to assure its puri- ty.
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Man uses water for domestic and sanitary purposes and returns it to the source through . Industry likewise replaces water diverted to its use. Hence the cycle is completed but it is of prime importance that the supply be protected against pollution, for if it fouls no one can pre- dict how may be the results.
(2)
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A water supply system is an arrangement for transporting water from areas of to an area of . This includes works for the col- lection, transmission, treatment, storage, and distribution of water for
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homes, commercial establishments, and irrigation, as well as for such public needs as fighting and flushing.
A water-supply system consists essentially of the following elements:
§ a source of supply which may be a lake, stream, spring, or;
§ a for storing water for use during periods when demand is greater than the daily flow of water;
§ conveying the water from the source of supply to the community is accomplished by means of a pipeline or a ;
§ removing impurities from the water to make it suitable for use re- quires a;
§ a of pipes is used for delivering the water throughout the various streets of the community.
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