研究工作进展困难的一个原因是，正如汽车收音机的调频一般，射电望远镜必须把光谱按照波段分成易于研究的片段。
One reason this is hard is that radio telescopes must chop the spectrum into fine portions to study it, like tuning into a signal on a car radio.
发射激光的原理就好像是工厂中汽车焊接一样，通过地面的望远镜发射激光，将地球附近的垃圾碎片推离开轨道。
Lasers similar to those used for welding in car factories would be fired through telescopes to 'nudge' piles of rubbish left in orbit.
在结肠镜检查时，医生很有可能要给你使用镇静药物。安排一个人在结肠镜检查后帮你驾驶汽车带你回家是必须的。
You will most likely be sedated during the procedure and an arrangement to have someone drive you home afterward is imperative.
应用推荐