她撞到书桌上,受了瘀伤.She bruised herself against the desk.我的脸上全是瘀伤，肋骨还断了一根。My face was covered with bruises and I had a broken rib.他脚杆骨撞到椅子而受瘀伤.He bruised his shin knocking against the chair....
Cepheid variable stars are stars whose brightness changes at regular periods.造父变星是一种光线按规律周期发生变化的恒星.His first great discovery was made when he recognized a Cepheid variable star.他的首次重大发现产生于他认识了一颗造父变星的时候....
他们所谓的回答不过是表示承认的咕哝罢了。Their replies were no more than grunts of acknowledgement.滚滚浓烟盘旋翻腾，恶臭味呛得她喘不过气来。Dense smoke swirled and billowed, its rank fumes choking her.再小的细节都逃不过她的眼睛。No detail was too small to escape her attentio...