kept是什么意思？

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.

He kept improving computer technology.

Since then, Toebe said, she has kept her promise to herself to cut back on her Internet use.

All these clothes are similar to the space Suit designs that kept astronauts comfortable in the temperatures of the moon, and are spin-offs from space technology.

Each ship was coal-powered by several boilers constantly kept running by exhausted crews below deck.

Enjoy the snow now, because chances are good that 2014 will be even hotter, perhaps the hottest year since records have been kept.

On the other hand, indicators of a person's accumulated knowledge—like performance on tests of vocabulary and general knowledge—kept improving with age, according to findings published in the journal Neurobiology of Aging.

Seventy-four percent of the women said the activity lessened their fears and kept them from thinking about their problem.

I only heard about the delay yesterday because we kept the production line clear to handle these special sheets.

Though Andrea kept her job as a school bus driver, she knew that they couldn't pay their bills and support their youngest of five children, Zac, age nine,on one income

Well, first of all, he kept the two dolphins together in the same tank and taught them to press levers whenever they saw a light.

If the light was kept steady, the dolphins were supposed to press the levers in reverse order

It has kept many traditions from Victorian times.

While advocating freedom for animals, they kept their pet mouse in a cage.

M : sorry to have kept you waiting ,Madam , I've located your luggage, it was left behind in Paris and won't arrive until later this evening W : oh ,I can't believe this ,have it been to delivered to my hotel then ,I guess Q :what happened to the woman's luggage

As he prepared the speech, Juan kept asking himself, "How can I make this clear and meaningful to someone who knows nothing about earthquakes or geological principles?

But she was so nervous that she kept forgetting what to say, and she spoke almost in a whisper.

For years, nutritionists have recommended that pasta be kept to a minimum, to cut calories, prevent fat build-up and stop blood sugar shooting up.

Half were instructed to repeat out loud what they were looking for and the other half kept their lips 30 sealed.

People at the back kept calling out "We can't hear."

Unilever recently ran an interactive campaign for its Axe deodorant(除臭剂), which kept viewers engaged for more than three minutes on average.

When the water hits the right level, the baby birds are kept safe from predators by a corrosive ditch.