Englishfor English speakers
overdrive
—
verb
drive or work too hard
The teacher is overworking his students
Overdriving people often suffer stress
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noun
the state of high or excessive activity or productivity or concentration
Troops are ready to go into overdrive as soon as the signal is given
Melissa's brain was in overdrive
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noun
a high gear used at high speeds to maintain the driving speed with less output power
—
verb
(= overuse)
make use of too often or too extensively
speed
Verb
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When you speed, you move or do something very fast.
The plane sped through the air.
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When you speed in a car, you drive faster than the law allows.
If you speed in your car, you might have an accident.
speed
Noun
—
The speed of something is how fast it moves.
sound moves at a very high speed.
ratio
Noun
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A ratio is the comparison in size or number between two things. It is written mathx:y/math and read mathx/math to mathy/math. It is the same as the fraction math\frac {x} {y}/math.
The ratio of men's jobs to women's is 8 to 1.
But Germany now has one of the highest ratios of spending to GDP in the European Community.
The low student/teacher ratio makes this a great school.