the radar sets have been running for a long time without wany trouble为什么用这时态,什么时候用现在完成进行时

the radar sets have been running for a long time without wany trouble为什么用这时态,什么时候用现在完成进行时 manners have fallen off the radar 怎么翻译比较好? The radar sets have been running for a long time without any trouble.为什么是用running不是用run?2、Do you remember being introduced to Dr. Henry during your last visit?具体翻译 below the radar翻译 1.I’ll be going to work on foot while my bicycle_____.(a) is being repaired (b) is repaired (c) will repaired (d) has been repaired2.The radar sets _____ for a long time without any trouble.(a) have been running (b) have been run(c) have run (d) we how does the radar veetoring traffic circuit work Radar是什么意思 sets the table中文是什么 I have radar helping me spot new friends为什么help要加ing The sun sets in the morning. sets the table用汉语怎么说 the sun sets为什么加s 英语翻译People can rent one of these cars for a whole day or just take a ride in it from one place to another,the professor said.Around 400 to 500 of these cars will be made for the Expo in 2010.The cars will have radar to help them get around pe There have been four sets of invaders of England是什么意思 英语翻译We show that changes to these assumptions affect more,the radar-only and lidar-only retrieval than the radar lidar retrieval,although the lidar-only extinction retrieval is only weakly affected. the sun rises in the east and sets in the 英语翻译The underlying mathematical theories of radar and sonar are very similar,and much of our scientific understanding of the details of what bats are dong has come from applying radar theory to them. The changing face of television sets People have been watching TV for more than 70 years.Did the TV sets in the 1940s look the same as today's?They were very different,in fact.YVs will also be very different in the future.The future of TV is Digital