四级like, if people jump the traffic lights, I don't know why there isn't a camera on the traffic lights to stop people doing that.
高考If you don't own a camera, you can buy one.
高考Patient as I was, after about 15 minutes, my camera scanning the sun and reviewing the shot I would eventually take, I grew frustrated.
六级The video camera that one single mother bought for a special occasion, for example, is not much fun now.
四级Decades ago, Kodak anticipated that digital photography would overtake film — and in fact, Kodak invented the first digital camera in 1975 — but in a fateful decision, the company chose to shelf its new discovery to focus on its traditional film business.
四级In 1976, the company commanded 90% of the market for photographic film and 85% of the market for cameras.
四级In fact, the camera could be the thing that proves that they didn't steal the $20 dollars, or knock the vase off the table.
六级Dehl and her fellow researchers wanted to find out if that was true, so they embarked on a series of nine experiments in the lab and in the field testing people's enjoyment in the presence or absence of a camera.
高考Digital cameras arrived on the scene in 1997.
四级Then again, the air of accountability that the camera generates can also work in contractors' favor.
高考Unfortunately, just as I took out my camera, a woman approached from behind, and planted herself right in front of my view.
四级Nearby cameras tracked the dogs’ eye movements.
高考Just at this time nasa decided to test some new high-altitude cameras by taking photographs of Yellowstone.
四级I think it will be very interesting to see what etiquette (礼仪) emerges in terms of whether you tell people you have a camera or not, and whether guests have a right to ask that it be tuned off, if it's not a security issue.
高考You must be careful with the camera.
六级Would you please tell me where I can get batteries for this brand of camera?
高考Companies produce thousands of different kinds of disposable products: paper plates, plastic cups, and cameras, to name a few.
高考Again, not a move, the next time, I had my camera ready to record what you see here, one of several dozen such pictures, so long as she had a slice to eat, she never bothered the one on her head.
高考Dr Dominoni, who is putting cameras inside nesting boxes to track sleeping patterns, said lack of sleep could put the birds' health at risk.
四级The elephant in your living room is your Internet-connected security camera, a device.
六级And the survey found flat demand for fitness monitors, smart thermostats ( ' , 恒温器 ) and connected home cameras, as well.
调查发现，健身监视器、智能恒温器的需求持平，恒温器 ) 以及连接的家庭摄像机。
四级Why does the author mention Kodak's invention of the first digital camera