Marconi tied several antennas to kites.马可尼在风筝上系了几根天线.Radio astronomy today is armed with the largest antennas in the world.射电天文学拥有世界上最大的天线.The jet has 57 antennas for its huge array of electronic gear. Normal is 17.机上装有五...
A few lecturers have been improvising to catch up.部分讲师被临时抽调以救急.I asked her what the piece was and she said, 'Oh, I'm just improvising'...我问她那一段是什么音乐,她说：“噢,我只是即兴弹的。”I asked her what the piece was and she sa...