所有的手提行李都要接受X光检查。All hand baggage would be x-rayed.就手提电脑而言，键盘就显得大而笨重了。The keyboard is a large and clumsy instrument as far as portable computers are concerned.检测员会用一台手提电脑当场给出意见。The surveyor will use a lap-top computer to ...
But as they soon discovered, disguises can sometimes be too per fect.正象他们不久就发现的那样, 化装效果有时可能太完美无缺了.The ef fect of erosion varies with soil type and depth.侵蚀的影响因土壤的类型和深度的不同而不同....