She gave birth to Annabel just after her seventeenth birthday.她17岁生日刚过便生下了安娜贝尔。The ornately carved doors were made in the seventeenth century.那些雕饰精美的门制于17世纪。The bones were "mislaid" during the seventeenth-century restora...
他的脚步声响亮地回荡在铺着地砖的走廊里.His footsteps echoed loudly in the tiled hall.他响亮地哼了一声，摇了摇头。He snorted loudly and shook his head.哈里又在拔弄他的吉他, 响亮地弹奏着最新的流行曲子.Harry was plucking his guitar again, banging out the latest popular runes....
中子和质子构成了原子核.The neutrons and protons form the core of the atom.原子核由中子 、 质子和其他粒子构成.The nucleus of an atom consists of neutrons, protons and other particles.中子就是原子核里不带电的粒子。A neutron is simply a neutral particle in the nucl...