Boy, did this woman know how to put a dampener on your day.天啊，这个女人可真会让人扫兴。Admittedly, the recession has been a bit of a dampener.诚然经济萧条已经逐步在减弱.The incident put a dampener on his birthday party.这件事使得他的生日晚会很扫兴.He used a da...
一束光通过棱镜就会形成光谱。A spectrum is formed by a ray of light passing through a prism.这是一种原子光谱.This is a kind of atomic spectrum.天文学家们必须要从这些恒星上采集更多的光谱来证实他们的推想。Astronomers will have to collect more spectra from these stars to conf...