They sat aside 100 channels, each 200 kilohertz wide.他们在旁边坐了100种渠道, 各200千赫宽.Twisted - pair conductors are sufficient if frequencies of interest are below a few hundred kilohertz.如果信号频率低于几百kHz,则使用双绞线就已足够....
I dozed off during the soporific music.我听到这催人入睡的音乐,便不知不觉打起盹儿来了.The warmth of the room and the monotony of the speaker's voice grew soporific.房间里的热气和发言人单调的声音让人昏昏欲睡。After trudging for some distance, his slow steady st...
你脸上的抓痕是怎么来的?How did you come by that scratch on your cheek?小偷带着浑身的抓痕和青肿逃之夭夭.The thief got away , but not without some scratches and bruises.他脸上有道深深的抓痕.He has a deep scratch on his face....
His wrist was sprained.他的手腕扭伤了。I stumbled and sprained my ankle.我摔了一跤，把脚脖子扭了。When Mary sprained her ankles, John carried her piggyback to the doctors.玛丽扭伤了足踝, 约翰驮她去看医生....