73 in a 55 mph

73 in a 55 mph the peregrine falcon has a normal cruising speed of about 40mph and can,in short bursts of level flight,achieve speeds approaching 70mph.3842 A car traveled from A to B in 30 minutes.The first half of the trip was covered at 50 mph,and the second half at 60 mph.What was the average speed? 解析下面两句话1、There was something of a drier interlude before an active weather system moved in from the west.2、Some of the more exposed locations saw sustained winds of 40mph with gusts of 58mph. A car traveled frow Ato B in 30 minutes.The first half of the trip was covered at 50 mph cold theA car traveled form A to B in 30minutes .The first half of the trip was covered at 50 mph,cold the second half at 60 mph .What was the averagespeed? It is 19 feet long and can fly a distance of 460 miles, with a top speed of 115mph in the air意思 mph是什么意思 MPH是什么意思? 英语翻译原文：why plod about at 120 mph in a $300,000 Cessna when you can fly four times as fast in an L-39 that costs the same and looks a hundred times sexier?希望翻译全文! the car is run a speed of 60mph on road.the car is run a speed of 60mph on road.空里面用什么? 卡宴迈速表上的mph是什么意思 MPH是什么单位 风速 mph是什么单位 速度mph什么意思 MPH的含义? at a clip of怎么解释?At a clip of 30 mph (48 kph), Ike was expected to continue on its northwesterly path, reaching New England by Monday morning. 是指风速减掉了30 mph,还是减少以后的风速是30 mph? 谁能帮我翻译英文（见补充说明）?It took only fifty-eight years, however, to go four times that fast, so that by 1938 men in airplanes were traveling at better than 400mph. It took a mere twenty-year flick of time to double the limit aga 英语翻译It took only fifty-eight years,however,to go four times that fast,so that by 1938 men in airplanes were traveling at better than 400 mph.It took a mere twenty-year flick of time to double the limit again.And by the 1960's rocket plants