B1 to (make something) become larger in amount or size增大;增加;增强
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We need to increase public awareness of the disease.
Our main aim is to increase sales by 12% this year.
Studies show that if a working environment is pleasant, productivity increases.
Students do find that their workload increases throughout the course.
Life expectancy in Europe has increased greatly in the 20th century.
B2 a rise in the amount or size of something(数量或尺寸)增加;增长
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The tax increase will add 4p to a litre of petrol.
I've managed to negotiate a five percent pay increase with my boss.
The Opposition has condemned the government's proposed tax increases.
Some people blame television for the increase in crime.
An increase in average temperature by only a few degrees could cause environmental problems worldwide.
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