I love to take a train journey. I like fast trains the best, ones that travel at over 100 kilometers an hour. You can get to a place by bicycle of course, but how far can you travel by bike? A train ……

AUSTRIAN pilot Felix Baumgartner became the first man to travel faster than sound in a skydive (高空... feeling the rushing air or the loud noise.Also, with no reference points, “you don’t know how fast you ……

AS clichéd (过时的) a saying as it is, “how time flies!” describes how fast time can travel... scientists from the UK’s University Campus Suffolk have worked out the real speeds of 20 speed cliché ……

sonic boom when they crack the whip. Aircraft that travel faster than the speed of sound can also make.... This will create a sound wave that is very loud, which is a sonic boom.In fact, lots of things can make sonic ……

Sound can travel about three times (倍) faster through water than air. ……

by NASA to test speeds fromMach(马赫) 7 up to Mach 10 (7 to 10 times the speed of sound, whichvaries(变化) with temperature and altitude). The unpiloted plane can travel so fast due to the introduction ……

. This plane can fly at about 1,160 kilometers per hour. That’s almost as fast as the speed (速度) of sound...?____________________________________________________________________________________________________8. How fast can ……

of the maze, finding out where it ends, and searching for a way out.While the boys are busy finding... here, and for what purpose? Can Thomas lead them out of the maze?“This is a story about what it means ……

(科幻) film came out in China on Oct 28.It all begins when Thomas finds himself going up very fast in an... runners”, a squad of super-fit boys who travel through the maze every day and make sure to be out ……

How fast can you get through this maze?How fast can you get through this maze?   ……

how deep the ocean is.In real life, scientists use sound waves (声波) to find out the depth (深度) of the ocean. First, ships send out sound waves to the seafloor. Then, scientists time how long it takes ……

(深度) of the ocean. First, ships send out sound waves to the seafloor. Then, scientists time how long... send out sound waves to the seafloor. Then, scientists time how long it takes the sound waves to go ……

Fastest car in the future酷炫的超音速跑车亮相北京。THIS car can travel faster than sound. Its driver, 52-year... to travel faster than sound at ground level?2. How old is the cat?3. How does the clock wake people up ……

away from danger. The new AI system can sound alarms within just one second. This will save lots... for people to take action and get away from danger. The new AI system can sound alarms within just one second ……

.On slow radio, listeners can hear the sound of singing birds, cows being brought in from the fields... radio can remind us of the sounds around us that we often filter out (过滤掉). Slow radio doesn’t just ……