Speed是什么意思？

The study, which followed more than 2,000 healthy adults between the ages of 18 and 60, found that certain mental functions—including measures of abstract reasoning, mental speed and puzzle-solving—started to dull as early as age 27.

Steamships captured the North Atlantic passenger business from sail in the 1840s because of its much greater speed.

The high cost of steam and the lesser need for speed kept the majority of the world's ocean freight moving by sail until the early years of the 20th century

If you could move at the speed of light, your time would stand still.

A search is now under way to confirm the suspected existence of particles of matter that move at a speed greater than light, and therefore, might serve as our passports to the past

Earlier this morning, the office asked for the public's help to measure their speed results, saying consumers deserved to get the speeds they were promised.

Even when they stay on the right side of the law, Internet providers arouse customers' anger over bandwidth speed and cost.

If you've got a good car that can go at a high speed, then it's really nice to do that.

Obviously, when driving through a residential area or where there's a school, you've got to have speed policemen.

One early problem faced by Internet users was speed.

Or like speeding, it's very easy to put speed cameras in certain places.

Speed, of course, is essential to the drive-through experience, and drive-throughs are hugely important to chains such as McDonald's, Burger king and Taco Bell.

The team found that exerciser educed the speed of rapid eye movements by about 8%, preventing their ability to capture new visual information.

So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once be is moving, it is hard to change his state of motion.

In the old days, we didn't much write like talking because there was no mechanism to reproduce the speed of conversation.

If the collapse of the rain forests speeds up dramatically,it could eventually release 3.5-5 billion metric tons of carbon into the atmosphere each year - making forests the leading source of greenhouse gases.

To increase the volume and the speed with which we move natural resources through the consumer economy to the junk pile or the waste heap.

After repeating the question, she explained that the sufficient number of security guards would be working at peak hours to speed things along

It's a complex system wherein data is copied to multiple intermediate devices, usually to speed up access to files when millions of people are trying to access the service at the same time.

Civilian aviation is being disrupted, not by the age-old desires for speed, romanticism and glamour, but by the pressing need to respond to a changing climate.

Furthermore, they say, it is the best way for researchers to gather the range of observations that are necessary to speed up discoveries or to identify large-scale trends.

give the right computer a massive database of faces, and it can process what it sees—then recognize a face it's told to find—with remarkable speed and precision.

Manufacturers in America valued "speed to market" more than in other countries, the report found.

Only a small fraction of the population was literate, but the production of books grew at an extraordinary speed.

Protein can give them the edge they need to speed that process.

Protein can speed the repairing of damaged muscles.

So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once he is moving, it is hard to change his state of motion.

These fears are mostly exaggerated: as with hysteria about genetic modification, we humans are generally wise enough to manage these problems with speed and care.

They scanned the brains of teens and adults who were playing a virtual driving game designed to test whether players would brake at a yellow light or speed on through the crossroad.