...If the flow persists, these articles may besaturated with tincture of iron, but it is not advisable to use it unlessnecessary, as it is a caustic and retards healing by causing a slough... 
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The progress of the earth, meanwhile,although it greatly retards the apparent motion from A to C, greatlyhastens it from C to A...
Henry Warren 「Recreations in Astronomy」
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